AMSOIL FAQ Page
Purchasing AMSOIL Products
How long have AMSOIL lubricants been on the market?
Answer: AMSOIL products have been available since 1972, when AMSOIL 10W-40 Synthetic Motor Oil
became the first synthetic motor oil to meet American Petroleum Institute (API) service
requirements. Today, AMSOIL manufactures synthetic lubricants for virtually all automotive,
powersports, commercial and industrial applications.
Becoming an AMSOIL Dealer
Are AMSOIL Dealers required to sell products?
Answer: No. Dealers only need to sell if they want to earn commissions and bonuses. Even then,
Dealers are encouraged to operate their businesses according to their own goals and schedules;
AMSOIL does not place any pressure on its Dealers to make sales.
After becoming an AMSOIL Dealer, what business start-up costs might I expect?
Answer: New Dealers are not required to make any additional purchases beyond the cost of their annual Dealer
registrations. However, AMSOIL recommends new Dealers purchase the Business Manual (G700 U.S., G8700 Can.) and/or the
Literature Kit (G1312 U.S., G8312 Can.). The Business Manual contains material that helps new Dealers learn how to
sell AMSOIL products, including manuals explaining how to administer the various programs through which AMSOIL products are
sold. It also contains information explaining how commissions are calculated and other material that helps Dealers run a
successful AMSOIL business. The Literature Kit contains product data bulletins, price lists, application brochures and other
documents that provide valuable AMSOIL product information. Most of the information included in the Business Manual and Literature Kit
is available free in the Dealer Zone.
AMSOIL also recommends Dealers purchase business cards, available through the AMSOIL Print Center.
Many also decide to purchase a name badge, website, product catalogs and other literature items for
distribution. Total expenses vary depending on quantities, but can easily be kept below $200.
Expenses of this kind are common to all new business ventures and not exclusive to becoming an AMSOIL Dealer.
Is it possible to earn a residual income as an AMSOIL Dealer?
Answer: Residual income refers to money earned through indirect involvement. While it is possible to earn
residual income as an AMSOIL Dealer, it requires an active group of successful personal group Dealers. Dealers who register other Dealers
and help train them to succeed can continue earning commissions if they fall ill or cannot actively work their Dealerships for
another reason. Building a successful personal group, however, requires a strong commitment to education and training.
Are there costs required to cancel an AMSOIL Dealership?
Answer: No. The AMSOIL registration fee is refundable if notification of
intent is made to the sponsor or AMSOIL INC. within three days of the date shown
on the application. Otherwise, a Dealer can simply choose not to renew his or her
Synthetic Oil Basics and Switching From Petroleum to Synthetic
Can AMSOIL lubricants be safely mixed together?
Answer: Applications require specific lubricant properties to deliver maximum performance and protection. AMSOIL carefully
tailors its synthetic lubricants under the strictest quality control standards to provide the required properties for the intended
application. Mixing AMSOIL synthetic lubricants is not only unnecessary, it may lead to reduced performance and even equipment failure.
Automatic transmission fluids offer a perfect example. Some transmissions require lubricants that contain specific frictional
characteristics to reduce, or eliminate, clutch slippage, while other transmissions may require different frictional requirements.
Mixing fluids recommended for different performance specifications may lead to a host of problems, including erratic shifting and transmission failure.
In some applications, mixing lubricants may not lead to equipment failure, but it will reduce performance. For example, if AMSOIL
Signature Series 5W-30 Synthetic Motor Oil is installed in a vehicle, and its owner adds AMSOIL OE Synthetic 5W-30 Motor Oil to top
off the engine if Signature Series isn’t available, the vehicle will continue to operate perfectly; Signature Series and OE Synthetic
Motor Oil share a similar chemistry, and formulations of the same viscosity can be safely mixed. However, mixing lubricants will shorten
Signature Series' life expectancy and reduce its performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.
To minimize the risk of performance- and warranty-related issues due to improper mixing, AMSOIL does not recommend mixing AMSOIL synthetic lubricants.
What is the difference between synthetic and conventional oil?
Answer: Motor oil, whether synthetic or petroleum-based, consists of molecular chains of hydrogen and carbon atoms,
referred to as hydrocarbons. Petroleum crude oil is a thick, highly flammable dark-brown or greenish liquid with high energy density.
Many contaminating elements exist in this complex mixture of hydrocarbons, including sulfur, nitrogen, oxygen and metal components
such as nickel or vanadium. Petroleum crude oil is the raw material used for a wide variety of petrochemicals, including solvents,
fertilizers, plastics and lubricants.
The oil refining process separates the various types of molecules in the oil by weight, resulting in a concentrated batch
suitable for manufacturing products such as gasoline, LPG, kerosene or lubricant base oils. The chemical composition of
conventional motor oil can vary substantially depending on the raw crude oil refining process.
While petroleum base oils are refined, synthetic base oils are manufactured and can achieve a higher performance level.
Synthetic oil is chemically engineered for a certain molecular composition with a tailored and uniform structure. Such fine-tuned
control over the final molecular composition of synthetic oils is the key to their superior performance properties. Designing
molecular structures in a planned and orderly fashion results in molecules, and end-products, that are far more stable than their
refined petroleum counterparts.
What roles do additives play in motor oil performance?
Most lubricating oils have other chemicals added to improve the overall performance of the fluid. Chemical additives are used to enhance the
beneficial properties of the base oil or to make up for oil deficiencies. For passenger car motor oils, base oil makes up 70 to 80 percent of
the final product; the other 20 to 30 percent is comprised of additive chemistry.
Additives help lubricants stand up to extreme operating environments. Even the best base oil would not be able to protect as well against the
effects of heat, shearing forces, chemical and water dilution, corrosion and wear particles. In short, additives make good base oils even better.
They give good base oils the performance benefits consumers have come to expect, such as multi-grade performance, extended drain intervals and
chemically react to form a film barrier that prevent metal-to-metal contact and wear.
reduce the tendency for oil to react with oxygen and reduce sludge buildup.
help suspend and disperse contaminants in the oil to keep engine surfaces free of sludge and deposits. They fight the build-up
of corrosive acids and are most efficient at controlling low-temperature deposits.
help suspend and disperse contaminants in the oil to keep engine surfaces free of sludge and deposits. They are most efficient at
controlling high-temperature deposits.
coat metal surfaces to help prevent close-contact components from seizing under extreme pressure.
They are activated by high temperatures and high loads to react with the metal’s surface to form a sacrificial wear layer on components.
reduce the surface tension of air bubbles and causes them to collapse.
can be used to give oil more 'slippery' characteristics. In engine oils, friction modifiers are used to increase the
oil’s lubricity for the purpose of reducing friction and improving fuel economy.
Pour Point Depressants
give high-viscosity oils good low-temperature properties. Pour point depressant polymers inhibit the formation of
crystals to minimize low-temperature viscosity increase.
Rust & Corrosion Inhibitors
form a protective barrier over component surfaces to seal out water and contaminants. While most rust and
corrosion inhibitors work by forming a physical barrier, some rust inhibitors function by neutralizing acids.
Viscosity Index (VI) Improvers
are long-chain polymers that help control the viscosity of multi-grade engine oils. They expand and
contract as temperatures vary. High temperatures cause VI improvers to expand and reduce oil thinning; low temperatures cause VI improvers
to contract and have little impact on oil viscosity.
Must new cars be broken in using petroleum oil?
Answer: No. AMSOIL synthetic motor oils can be safely used during break-in. In fact, many vehicles, including the Dodge Viper and
Chevrolet Corvette, are factory-filled with synthetic oil.
Why is there an hours limit in addition to time and mileage limits on AMSOIL synthetic motor oil’s service life?
Answer: No matter how well motor oil is formulated, it won’t last forever. As the miles accumulate, motor oil begins to degrade and lose its lubricating
effectiveness, while the additives are depleted. Severe-service driving conditions accelerate this process. Even with little mileage on the oil, oxidation,
gases and moisture take their toll and start the degradation process, making it necessary to set both a mileage and time limit with oil change intervals.
Excessive idling, common with fleet vehicles, puts additional stress on the oil, making it necessary to set an hours limit for vehicles subjected to excessive
idling. Motor oil and vehicle manufacturers have developed general recommendations for the maximum amount of time or miles that the oil can be used; typically
these intervals fall between 3,000 and 7,500 miles, depending on the type of service.
Many AMSOIL synthetic motor oils are specially formulated for extended drain intervals, providing maximum protection longer than other oils.
Check the product data sheet for specific recommendations.
Will synthetic motor oils cause engines to leak oil?
Answer: No. Synthetic oils do not cause engines to leak oil. In fact, AMSOIL synthetic motor oil is fully compatible with modern seal
materials and is properly formulated to condition seals, keeping them pliable to prevent leakage.
Can AMSOIL motor oils be mixed with other brands?
Answer: Yes. AMSOIL synthetic motor oils are compatible with other conventional and synthetic motor oils. Mixing AMSOIL motor
oils with other oils, however, will shorten the oil’s life expectancy and reduce the performance benefits. AMSOIL does not support
extended drain intervals where oils have been mixed. Mixing other oils with AMSOIL motor oils may also void the AMSOIL limited warranty.
What kind of base stocks does AMSOIL use? Are AMSOIL synthetic lubricants PAO-based?
Answer: AMSOIL maintains formulation details as proprietary and does not divulge specifics regarding the type of synthetic
base stocks used in its synthetic lubricants. AMSOIL developed the world’s first API-qualified synthetic motor oil in 1972 and has
remained the leader in the synthetic lubricant industry by continually researching new technologies and demanding only the highest-quality
raw materials. As the company moves forward with new technologies it is increasingly more important that this information remains proprietary.
AMSOIL views synthetic base oils the same as it views additives, with each having its own set of unique properties. AMSOIL does not insist
on a particular type of base stock, but insists on particular performance parameters. AMSOIL chooses whichever synthetic base stock or
combination of base stocks delivers the desired result and tailors its lubricants to be application-specific (gasoline, diesel, racing,
transmission, gear, extended drain, extreme temperatures, etc.). At the end of the day, the type of base stock used to formulate the oil
is inconsequential; the product’s performance is what matters.
Why are AMSOIL synthetic motor oils capable of extended drain intervals?
Answer: AMSOIL synthetic motor oils are formulated using premium synthetic base oils, and the highest-quality additives, that
provide extended-drain capabilities. AMSOIL synthetic motor oils achieve greater cleaning powers, while providing better equipment
protection over longer oil drain intervals. The unique synthetic formulation and robust TBN retention of AMSOIL synthetic motor oils
work to resist oxidation and neutralize the acids that shorten the service lives of other oils. Their characteristic resistance to
high-temperature volatility (burn-off) helps reduce oil consumption, while maintaining viscosity over longer periods of time than other oils.
Check the product data sheet for specific recommendations.
Will AMSOIL motor oils decrease oil consumption?
Answer: AMSOIL synthetic motor oils can reduce oil consumption in mechanically sound engines. However, AMSOIL synthetic motor
oils cannot fix engines that consume oil due to mechanical problems.
How do AMSOIL synthetic motor oils compare to other motor oils?
Answer: The importance of using good-quality oil in an engine cannot be overstated. AMSOIL synthetic motor oils consistently
outperform conventional and other synthetic oils in virtually every category of performance, including wear protection, extreme
high- and low-temperature performance, foam control, viscosity retention, rust and corrosion protection, volatility and fuel economy.
While other brands may provide good performance in some of these areas, AMSOIL synthetic motor oils consistently perform at the top
in every category. Drivers can have confidence knowing that AMSOIL synthetic motor oils provide maximum performance and protection.
What are "normal" and "severe" driving conditions?
Each vehicle manufacturer defines "normal" and "severe" driving conditions for its equipment; AMSOIL recommends
owners check these definitions in their owner’s manual to determine the service condition in which they typically drive.
AMSOIL defines normal service as personal vehicles frequently traveling greater than 10 miles (16 km) at a time and not operating
under severe service.
AMSOIL defines severe service for gasoline engines as turbo/supercharged engines, commercial or fleet vehicles, excessive idling,
first-time use of AMSOIL synthetic motor oil in vehicles with over 100,000 miles without prior continuous use of AMSOIL synthetic
motor oil, daily short-trip driving less than 10 miles (16 km), frequent towing, plowing, hauling or dusty-condition driving.
AMSOIL defines severe service for diesel engines as extensive engine idling, daily short-trip driving less than 10 miles (16km)
or frequent dusty-condition driving.
See the AMSOIL Product Recommendation and Drain Interval Chart
for additional information.
Motor Oil: Gasoline Auto and Light Truck
Are synthetic AMSOIL motor oils "all-season" oils?
Answer: Yes. Because AMSOIL synthetic motor oils are formulated with premium synthetic base oils, they provide superior
high and low-temperature performance. Synthetic oils resist thinning out at high temperatures to maintain critical protection in
extreme heat. They also minimize sludge and deposit formation in high-temperature operation. AMSOIL synthetic motor oils resist
thickening in cold temperatures to provide rapid cold starts and improved low-temperature operation compared to conventional oils.
Why are there multiple oils of the same viscosity?
Answer: A significant portion of an oil's performance and specification compatibility comes from its additive components.
AMSOIL offers multiple oils with the same viscosity because they are formulated with different additive packages that carry different
manufacturer oil specifications. This allows AMSOIL to provide premium oil for more equipment manufacturers and industry specifications
than would be possible if only a single viscosity grade was offered.
What are the differences between AMSOIL OE Synthetic Motor Oil, XL Synthetic Motor Oil and Signature Series Synthetic Motor Oil?
Answer: AMSOIL OE Synthetic Motor Oil is recommended for vehicle manufacturer-recommended oil change intervals; AMSOIL XL
Synthetic Motor Oil is recommended for extended drain intervals of 10,000 miles or six months (whichever comes first) and AMSOIL
Signature Series Synthetic Motor Oil is recommended for extended drain intervals of 25,000 miles or one year (whichever comes first).
AMSOIL Signature Series Synthetic Motor Oil is formulated with better base oils and more robust additives, allowing longer extended
drains than AMSOIL OE or XL Synthetic Motor Oils.
Why isn’t AMSOIL Dominator® Synthetic Racing Oil recommended for street-driven vehicles?
Answer: AMSOIL Dominator Synthetic Racing Oil is a premium-quality oil formulated for maximum protection in high-performance
and racing applications. It is fortified with high levels of zinc and phosphorus, which are incompatible with catalytic converters
common in today’s street-driven vehicles; therefore, Dominator Racing Oil does not carry API service classifications required by many
standard passenger vehicles. However, Dominator Racing Oil is the ideal recommendation for street rods, muscle cars and other high-performance
vehicles driven on the street.
What does the "W" represent in 5W-30 motor oil?
Answer: The "W" in 5W-30 motor oil stands for "winter" and indicates the oil meets or exceeds certain criteria for good
low-temperature performance. Motor oil with SAE viscosity grade 5W-30 behaves like an SAE 30 oil at high temperatures and SAE 5W
oil at low temperatures, providing the necessary fluidity for rapid starts and efficient engine operation at low temperatures.
What is considered "normal" oil consumption?
What may be considered normal oil consumption for one vehicle may be excessive for another. As a rule, the more miles
and wear accumulated on an engine, the more oil that engine consumes. Typically, one quart of oil within 3,000 miles is normal, but
it is best to confirm oil consumption limits with the vehicle manufacturer. The following document explains mechanical-related
issues that can lead to oil consumption: Engine Oil Consumption
Motor Oil: Heavy Duty & Off-Road Diesel
What is the difference between AMSOIL 5W-40 and 15W-40 diesel oil?
Answer: AMSOIL 5W-40 and 15W-40 diesel oils are multi-grade oils, meaning they provide good performance in high and low temperatures.
AMSOIL 5W-40 and 15W-40 both behave like SAE 40 oils in high temperatures; however, the 5W-40 is thinner than the 15W-40 at cold temperatures.
Can CI-4 rated oil be used in 2007 or newer diesel engines?
Answer: Model 2007 and newer diesel engines are fitted with exhaust aftertreatment systems necessary to meet current minimum emissions
requirements. API CI-4 and CI-4 Plus oils typically contain too much sulfated ash to be compatible with these aftertreatment systems. When in
doubt, check the oil specification to determine the suitability of the oil for the intended application. AMSOIL recommends using an oil meeting
the manufacturer-specified diesel oil specification.
Motor Oil: Powersports and Small Engine
What does "wet clutch" mean when discussing power sports equipment?
Answer: Wet clutches are immersed in motor oil in order to cool the clutch plates. They are often found in motorcycle applications,
and they require fluids with certain frictional requirements to promote smooth shifting and clutch engagement. Dry clutches require no lubrication.
Motor Oil: Motorcycles
What are the recommended AMSOIL transmission and primary chaincase lubricants for a Harley-Davidson Big Twin?
Answer: For the newer Big Twins, AMSOIL recommends 20W- 50 Synthetic Motorcycle Oil (MCV) in the engine, transmission and primary chaincase.
As secondary recommendations, Synthetic V-Twin Transmission Fluid (MVT) may be used in the transmission, and Synthetic V-Twin Primary Fluid (MVP)
may be used in the primary chaincase. In older Harleys such as Knuckleheads, Panheads and Shovelheads, AMSOIL recommends SAE 60 Synthetic Motorcycle Oil (MCS).
What is the oil change interval for AMSOIL synthetic motorcycle oils?
AMSOIL synthetic motorcycle oils are engineered to provide outstanding protection for up to twice the
manufacturer’s recommended change interval or one year, whichever comes first. Unless using an
AMSOIL Ea Motorcycle Oil Filter
, change the filter based on the manufacturer’s recommended interval. For Big Twin Harley-Davidson transmissions,
follow the Harley-Davidson recommended drain interval for synthetic oil up to 20,000 miles or one year, whichever comes first.
Are AMSOIL synthetic motorcycle oils different from AMSOIL synthetic automotive oils?
Answer: Yes. In addition to withstanding extreme pressure, protecting against rust and withstanding high temperatures,
motorcycle oils must be compatible with wet clutches. AMSOIL synthetic motorcycle oils are designed to meet the unique frictional
requirements necessary for wet-clutch compatibility and provide maximum protection and performance in these applications.
Filters: Air and Oil
What is the difference between a "micron rating" and "beta ratio test" when referring to filters?
Answer: A filter’s micron rating refers to the smallest size contaminant the filter media can remove; however, there is no correlation
between micron rating and a filter’s efficiency percentage.
The beta ratio test measures a filter’s efficiency for removing particles of a certain size by comparing the amount of contaminant particles
before and after filtration. The number of particles after filtration is divided by the number before filtration. The resulting number is
the beta ratio. AMSOIL Ea filters have a minimum beta ratio of 75, meaning they are capable of removing 98.7% of contaminant particles of
a stated size.
Are AMSOIL Ea® Air Filters washable? How are they cleaned?
Answer: AMSOIL Ea Air Filters
are not washable, but should be cleaned by vacuum or shop air every 25,000 miles or one year, whichever comes first. Clean the filter
housing with a cloth; use care to avoid knocking contaminants into the air inlet.
To vacuum, carefully vacuum the filter media on the dirty side. If using shop air, blow the filter media at a 45-degree angle on the
clean side using low-pressure air (15 – 20 psi).
Is it okay to use non-AMSOIL brand filters with AMSOIL lubricants?
Answer: Yes. Non-AMSOIL brand filters may be used with AMSOIL lubricants.
However, the manufacturer recommended change intervals and cleaning procedures should
be followed. AMSOIL supports the full 10,000 mile/6 month XL Motor Oil drain interval
with any non-AMSOIL oil filter.
What is the proper change interval for Ea® By-Pass Filters?
Answer: When used in conjunction with AMSOIL motor oil and an AMSOIL Ea or
Donaldson® Endurance™ Full-Flow Oil Filter, Ea By-Pass Filters should be changed
every other full-flow filter change up to 60,000 miles. When used with other brands
of motor oil or full-flow filters, Ea By-Pass Filters should be changed every other
full-flow filter change. AMSOIL recommends using oil analysis when extending oil
How long can oil drains be extended when using a by-pass filtration system?
Answer: AMSOIL By-Pass Filters are designed to filter out fine particles;
they are not meant to extend oil change intervals beyond original recommendations.
However, when fine particles are filtered out of the motor oil, it may be possible
to attain longer drain intervals. This should be determined by used oil analysis.
In addition, the use of an AMSOIL bypass system may allow for the use of larger
oil filters, which can increase filtering capacity.
What is the service life of AMSOIL Ea® Air and Oil Filters?
Answer: AMSOIL Ea Air Filters are guaranteed for up to 100,000 miles/four
years provided they are cleaned by vacuum or compressed air every 25,000 miles/one
When used in conjunction with an AMSOIL extended-drain motor oil, Ea filters designated
with product code EaO are guaranteed for up to 25,000 miles/one year in normal service
and up to 15,000 miles/one year in severe service. Ea filters designated with product
code Ea15K are guaranteed for up to 15,000 miles/one year, whichever comes first,
regardless of driving conditions. It is recommended that all AMSOIL-brand oil filters
be changed when the motor oil is changed. If motor oil other than AMSOIL is used,
AMSOIL Ea Oil Filters must be changed according to the vehicle manufacturer’s recommendations.
Fuel Additives: Gasoline
What exactly does AMSOIL P.i.® gasoline fuel additive do?
Answer: For optimum fuel efficiency and lower emissions, fuel must first
be atomized into a fine mist prior to entering the combustion chamber. Over time,
injector deposits produce irregular spray patterns with heavy streams of gasoline
that reduce performance, while intake valve deposits also decrease efficiency. AMSOIL
P.i. (API) is a potent gasoline additive designed to clean combustion chamber deposits,
intake valve deposits and port fuel injector deposits to improve fuel efficiency
up to 5.7 percent and an average of 2.3 percent.
Does AMSOIL offer any fuel additives that combat ethanol-related problems?
Answer: Yes. AMSOIL Quickshot® (AQS) contains a revolutionary technology
that focuses on three major fuel-related issues plaguing small engines and powersports
equipment: ethanol, water and dirty pump gas.
Ethanol in fuel has a tendency to
absorb water and separate from the gasoline. It then sinks to the bottom of the
gas tank, where it quickly degrades and creates gum, varnish and other insoluble
debris that can plug fuel flow passages and negatively affect engine performance.
When this ethanol/water mixture is pulled into the engine, it creates a lean-burn
situation that increases combustion chamber temperatures and can lead to engine
damage. AMSOIL Quickshot is proven to successfully fight ethanol problems and improve
Fuel Additives: Diesel
Does AMSOIL Diesel Cold Flow work if diesel fuel is beginning to gel?
Answer: AMSOIL Diesel Cold Flow (ACF) is designed to prevent fuel from gelling and clogging fuel lines and filters.
If the fuel is beginning to gel, the fuel should be treated with AMSOIL Diesel Recovery Emergency Fuel Treatment (DRC).
Diesel Recovery disperses the wax crystals and allows the fuel to flow.
Is it safe to use AMSOIL Engine and Transmission Flush in diesel trucks and cars?
Answer: Yes. AMSOIL Engine and Transmission Flush (FLSH) is safe for use
in diesel and gasoline engines and automatic transmissions to help restore equipment
efficiency and operation. AMSOIL Engine and Transmission Flush is not recommended
for manual transmission, CVT transmissions, differentials, transaxles, small engines
or power sports equipment.
What benefits are seen when using AMSOIL Cetane Boost?
Answer: Elevated cetane levels, generally above 50, are preferable to get
the most performance and power out of diesel engines. AMSOIL Cetane Boost (ACB)
is engineered to improve the cetane value of diesel fuel up to seven points. AMSOIL
Cetane Boost is appropriate for all types of service, including heavy- and light-duty
service, on- and off- road and marine diesel engines. Cetane Boost is compatible
with biodiesel and all types of exhaust emissions systems and is excellent for use
with Ultra Low Sulfur Diesel Fuel (ULSD). AMSOIL Cetane Boost also improves operating
cost by improving fuel economy, provides complete combustion for better power, reduces
white smoke and emissions, and improves cold temperature starting.
Vehicle Warranty and AMSOIL
How does using AMSOIL synthetic motor oil affect new vehicle warranties?
Using AMSOIL synthetic motor oil has no affect on vehicle warranties.
A federal law called the Magnuson-Moss Act (1975) prevents original equipment manufacturers
from putting conditions on vehicle warranties attached to any product or service
identified by brand, trade or corporate name, unless the manufacturer provides that
product or service free of charge. This means consumers have the freedom to use
aftermarket products of their choice without fear of losing the original limited
or implied vehicle warranty. For additional information, contact the AMSOIL Technical
Department at (715) 399-TECH (8324) or firstname.lastname@example.org
Will extending oil change intervals void new vehicle warranties?
Answer: No. Extending oil change intervals will not void new vehicle warranties.
To affect the vehicle warranty, it must be determined that the lubricant was directly
responsible for the failure; if the oil didn’t cause the problem, the warranty cannot
be voided, regardless of brand or length of time in use.
I see AMSOIL is registered to the ISO 9001:2008 standard and the ISO 14001:2004 standard. What does each mean and what are the differences?
Answer: ISO International Standards ensure that products and services are safe, reliable and of good quality. For business,
they are strategic tools that reduce costs by minimizing waste and errors and increasing productivity. They help companies access
new markets, level the playing field for developing countries and facilitate free and fair global trade.
ISO 9001:2008 is the most widely used quality standard throughout the world for quality management systems. It is based on the eight
quality management principles: customer focus; leadership; involvement of people; process approach; system approach to management;
continual improvement and fact-based decision making; and mutually beneficial supplier relationships. When fully adopted, these principles
have been proven to enhance organizational performance in providing quality products and services to customers. For customers and potential
industry partners, ISO 9001:2008 certification provides assurance that AMSOIL has systems in place to ensure consistent product quality
on every production run.
ISO 14001:2004 sets out the criteria for an environmental management system. It does not state requirements for environmental performance,
but maps out a framework that a company or organization can follow to set up an effective environmental management system. ISO 14001:2004
certification indicates that AMSOIL takes environmental stewardship seriously and takes deliberate steps to minimizing the company’s environmental impact.
Because its Quality Management and Environmental Management Systems are registered to ISO standards, AMSOIL Dealers and customers
can be assured that AMSOIL not only manufacturers high-quality products, but that the company is also actively monitoring and reducing
its environmental impact.
Where can AMSOIL product recommendations, for equipment, be found?
Answer: AMSOIL provides a number of product lookup and filter lookup guides
to help determine the appropriate lubricant or filter for an application. These
lookup guides are found on the right-hand side navigation menu at www.amsoil.com.
The following lookup guides are available to determine proper recommendations: Auto
and Light Truck, Power Sports, Small Engine, TRICO Heavy Duty, Vintage Vehicle and
What is oil analysis?
Answer: Oil analysis is a process for determining the chemical properties
of a lubricant. It’s often used to detect mechanical issues before major failures
occur. Used oil samples are analyzed for specific physical properties, contaminant
levels and wear debris from the equipment to determine if the oil can remain in
service. Oil analysis can also monitor the wear rate of the equipment and detect
if wear is elevated beyond acceptable limits. It is often used as part of a preventative
Why should oil analysis be done?
Answer: As part of a preventative maintenance program, oil analysis can help
owners and operators be proactive in their maintenance practices to help increase
equipment productivity and eliminate costly downtime. The cost of routine oil analysis
far outweighs the costs to replace major equipment on large industrial equipment,
commercial and passenger car vehicles. For those reluctant to extended
oil intervals, oil analysis provides evidence that AMSOIL motor oils have exception
performance and protection capabilities in extended service.
Can different AMSOIL gear lubricant viscosities be mixed?
Answer: AMSOIL gear lubricants are compatible with one another. Mixing different
AMSOIL gear lubricants, however, could change the viscosity properties of the oils,
depending on the ratios and viscosities mixed. This could impact the drain interval.
Mixing different viscosities of lubricants should be minimized whenever possible.
Are AMSOIL gear lubes safe for yellow metals?
Answer: Yes. As long as temperatures don’t exceed 250°F (121°C), all AMSOIL
automotive gear oils are safe to use in drive train applications with yellow metals.
Check the AMSOIL on-line look-up guide at www.amsoil.com for specific questions.
Is AMSOIL gear lube compatible with RTV sealant?
Answer: AMSOIL automotive gear lubricants are compatible with RTV sealant.
It is very important the RTV sealant manufacturer’s instructions be followed and
the product be FULLY cured before contact with the gear lubricant.
Can AMSOIL Severe Gear® be used in Harley-Davidson transmissions?
Answer: Yes. In Evolution 1340 and all Twin Cam Harley-Davidsons, AMSOIL
recommends AMSOIL 20W-50 Synthetic Motorcycle Oil (MCV) or Severe Gear 75W-110 Synthetic
EP Gear Lube (SVT). In older Harleys, such as Knuckleheads, Panheads and Shovelheads,
AMSOIL Synthetic SAE 60 Motorcycle Oil (MCS) or Severe Gear 75W-140 Synthetic EP
Gear Lube (SVO) is recommended.
What is API licensing for passenger cars?
Answer: An API (American Petroleum Institute) license indicates that a specific motor oil formulation has passed the minimum
performance standards as defined by a series of laboratory bench, physical, chemical and engine tests. These tests and
minimum performance standards are determined by the API Lubricants Committee to address specific areas such as
engine wear, deposits, fuel economy and emissions. The committee is comprised of representatives from automobile, oil
and additive companies.
Which companies license formulas with the API?
Answer: Additive companies develop licensed formulas that they offer to oil companies to re-license. It is inexpensive to re-license
one of these formulas, and the majority of oil companies choose to do this to avoid the costs associated with testing their
own formulas. This lowers the value of such engine oils because the same chemistry is being sold under many brand
names. The lubricant formulas from AMSOIL INC. are unique and proprietary.
Is there any flexibility in manufacturing an API-licensed formula?
Answer: API licensing was originally developed for mineral-based oils, and it affords these oils more flexibility than synthetic oils.
Conventional oils comprised of petroleum base stocks may use a simple program called base stock interchange for added
flexibility in manufacturing and purchasing. Interchange means that by completing the proper paperwork and running a few
minor tests an oil company can choose to buy these petroleum base stocks from many different suppliers. This ensures
adequate supply and competitive pricing. However, synthetic base stocks are supplier specific and base stock interchange
is not allowed. For example, if a formula was tested with an ester base stock from a specific supplier then only that supplier's
ester can be used. Complete engine testing would be required to use that exact same ester from another supplier
and is therefore not performed because of the associated costs. This inflexibility makes price negotiations with synthetic
base stock suppliers very difficult and increases business risk. Supply disruptions from only one source could shut down
There is also something called viscosity grade read-across. Fortunately, this applies to both petroleum and synthetic base
stocks, although the better cold-temperature performance of synthetics makes it more difficult to achieve in some situations.
The read-across guidelines ensure that if a manufacturer properly formulates the lubricant for which all of the API
tests have been performed, then the manufacturer may use that same basic formula to make more grades (i.e. 5W-20,
5W-30, 10W-30, etc.) of the same motor oil.
Finally, there is a rule for substitutions in the Chemical Manufacturers Association (CMA) code of practice that allows a
small degree of flexibility for all formulas. It allows a company to make changes to certain components in the formula with
limited testing and paperwork requirements, provided that the additives are at the same or higher concentration.
Why doesn’t AMSOIL license all of its synthetic motor oils?
Answer: If all AMSOIL motor oils were API licensed, the company could not source new raw materials from multiple suppliers,
which would greatly increase the threat of supply disruption and the likelihood of extraordinarily high prices. To solve this
problem, the API must establish base stock interchange guidelines for synthetic base stocks just as they have for other
base stocks, as well as develop interchange guidelines for other components too. Furthermore, licensing formulas limits
the ability to quickly adopt new technologies as they are discovered; each variation from the originally licensed formula
requires re-submission for complete engine testing (see the Ask AMSOIL entry above for more information).
How does AMSOIL INC. ensure that its products meet or exceed the minimum specifications of the tests required for API licensing?
Answer: First, AMSOIL INC. works closely with major additive companies to select the top-performing, and usually most expensive,
passenger car and heavy-duty diesel motor oil additives. These additives have already passed all of the API licensing
requirements in a petroleum- or synthetic-based formulation. Then, AMSOIL works with the additive company to maximize
the amount of additive used and to boost the additive package in selected performance areas to achieve an optimum performing
additive package for the intended application. This is unlike many other oil companies that, because additives are
expensive, use the minimum amount of the least expensive additives required to meet the minimum API requirements.
AMSOIL then uses a combination of synthetic base stocks with known performance characteristics as replacements for
the petroleum base stocks to optimize performance in areas of lubricity, volatility, viscosity index, oxidation and nitration
resistance, pour point, flash point, deposit control, soot handling, emissions and many other areas as well. AMSOIL also
uses a high-quality V.I. improver with outstanding viscosity and cleanliness properties. This replaces the inexpensive,
low-quality V.I. improver used in standard API-licensed petroleum formulas. AMSOIL does laboratory bench tests and runs
field tests to verify the superiority of the synthetic formula. AMSOIL continues to monitor the performance of the oil through
close scrutiny of tens of thousands of oil analysis tests per year across a wide variety of vehicles all around North America
and the world. AMSOIL INC. has been collecting used synthetic oil samples from passenger cars since 1982. No other oil
company has such a vast database of the performance of synthetic lubricants over extended drain intervals.
AMSOIL products and formulations outperform API-licensed oils because they are engineered for top performance from
the very beginning.