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Premium Protection 10W-40 Synthetic Motor Oil

Product code : AMOQT-EA

For use in both gasoline and diesel engines. Offers multi-functionality and wear protection. Ideal for applications where the extra protection of a higher-viscosity oil is desired. Excellent for motor homes and older vehicles, as well as many types of modern equipment and compatible with some motorcycles.
For use in both gasoline and diesel engines. Offers multi-functionality and wear protection. Ideal for applications where the extra protection of a higher-viscosity oil is desired. Excellent for motor homes and older vehicles, as well as many types of modern equipment and compatible with some motorcycles.

Premium Protection 10W-40 Synthetic Motor Oil



AMSOIL Premium Protection Synthetic Motor Oil is formulated to provide superior protection and performance in a wide variety of demanding applications. Its unique combination of synthetic base oils and a superior additive package results in a formulation that exceeds the requirements of most gasoline or diesel applications that call for 10W-40 or 20W-50 motor oil. Premium Protection Synthetic Motor Oil is ideal for high-mileage vehicles and high-stress vehicles subject to hot temperatures, heavy hauling, trailer pulling or off-road use. It provides the extra anti-wear protection required by engines with flat-tappet cams and high-tension valve springs. AMSOIL Premium Protection Synthetic Motor Oil offers flexibility and performance beyond conventional oils.

AMSOIL, the leader in automotive synthetic lubrication, produced the world's first API qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting your engine.

  • High-zinc formula guards against wear
  • Ideal for flat-tappet cams
  • Resists deposits to help keep engines clean
  • Convenience of use for gas and diesel engines

Superior Wear Protection
Premium Protection Synthetic Motor Oil is high-viscosity oil engineered to protect against metal-to-metal contact. It resists viscosity loss due to shear and is formulated with a heavy treatment of zinc and other anti-wear additives for excellent protection of gears, bearings, cam lobes and other high-pressure components in engines and transmissions. Premium Protection Synthetic Motor Oil helps extend equipment life.

Wet-Clutch Compatible
Premium Protection Synthetic Motor Oil contains no friction modifiers, making it ideal for motorcycles, maintenance equipment and other wet-clutch transmission applications. Formulated to prevent clutch glazing and slippage, it helps ensure smooth clutch engagement and long-term, dependable transmission operation. Premium Protection Synthetic Motor Oil reduces clutch wear for extended transmission life.

Resists Oxidation and High-Temperature Breakdown
Premium Protection Synthetic Motor Oil is formulated to overcome the thermal deficiencies common to conventional petroleum oils. Volatilization (burn-off), oxidation and excessive deposit formation from high heat are greatly reduced. Viscosity thickening is controlled and engines run cleaner, promoting cooler operation and long engine life in air- or liquid-cooled engines. In addition, the higher viscosity of AMSOIL 20W-50 Synthetic Motor Oil may help reduce motor oil consumption in equipment that experiences higher-than-normal usage rates when lower-viscosity lubricants are installed.

Extends Drain Intervals in Gasoline and Diesel Engines
Superior synthetic base oil and additive technology exceeds the requirements of both gasoline and diesel engines. Premium Protection Motor Oil is designed to neutralize acids, disperse soot and last longer in service than conventional oils.

APPLICATIONS
AMSOIL Premium Protection Synthetic Motor Oil is recommended for air- and liquid-cooled, large or small gasoline and diesel engines, transmissions and chaincase applications where 10W-40 oils are required with any of the following specifications:

  • API SL, SJ, SH, SG
  • API CI-4+, CI-4, CH-4, CF, CF-2
  • ISO-L-EMA
  • Caterpillar* ECF-1
  • JASO MA (Motorcycle)
  • MAN* 271/3275
  • MTU Type 2
  • Cummins* 20071/20072/20076/20077
  • Volvo*, VDS-2, VDS
  • Mack* EO-M+, EO-M
  • ACEA A3/B3, E3, E5
  • MB 228.1,228.3, 229.1
  • Detroit Diesel* 93K214

MIXING AMSOIL
AMSOIL Synthetic 10W-40 Premium Protection Motor Oil is compatible with conventional and synthetic motor oils. Mixing AMSOIL motor oils with other oils, however, will shorten the oil life expectancy and reduce the performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed. Aftermarket oil additives are not recommended for use with AMSOIL Synthetic Oils.

SERVICE LIFE
AMSOIL Synthetic 10W-40 Premium Protection Motor Oil is recommended for extended intervals in unmodified, mechanically-sound vehicles or equipment as follows:

Diesel Engine Service
–Normal Service - Up to 25,000 miles or one year, whichever comes first, or longer based on oil analysis.
–Severe Service - Up to 15,000 miles or one year, whichever comes first, or longer based on oil analysis.

Gasoline Engine Service
–Normal and Severe Service - Up to 15,000 miles or one year, whichever comes first, or longer based on oil analysis.

Motorcycles, Small Engines, Stationary Engines, Heavy Equipment and Other Applications
–Extend drain intervals based on oil analysis or follow the manufacturer-recommended drain interval.

AMSOIL Ea Full-Flow Oil Filters are designed for extended drain intervals. They stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea Full-Flow Oil Filters and replace at the time of oil change. Other oil filters should be changed at standard OEM* intervals.

*OEM - Original Equipment Manufacturer

OIL ANALYZERS INC., 715-395-0222, is a division of AMSOIL that provides cost-effective, quality oil analysis services. For more information on product applications and service life, refer to the AMSOIL Product Recommendation and Drain Interval Guide (G1490).

AMSOIL PRODUCT WARRANTY
AMSOIL products are backed by a Limited Liability Warranty. For complete information, visit www.amsoil.com/about/guarantee/.

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). An MSDS is available via the Internet at www.amsoil.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Don't pollute. Return used oil to collection centers.

* All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

Premium Protection 10W-40 Synthetic Motor Oil



Premium Protection 10W-40 Synthetic Motor Oil

  • 5
    10/40 with zinc,Awesome,love it
    By  JOHN,  a  Verified Buyer  from  CT - Connecticut  on  October 18, 2021

    Describe the issue

    I only use amsoil in my truck and Harley, there's nothing better I think,been using it for years, absolutely no regrets excellent oil
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    No more flat cams
    By  CamaroFan,  a  Verified Buyer  on  October 18, 2021

    Describe the issue

    I had a custom SBC race engine built and had issues with Cams going flat. First cam went flat after break-in and switching to OTC oil. Second cam went flat after 6000 miles on break-in oil and switching to Tier 1 Synthetic oil (which was guaranteed to work with my cam and lifters). Rebuilt entire engine for a 3rd time and started running Amsoil 10W-40 high zinc. 7 years later the engine is still running strong and makes same HP as the day it came off the dyno. I also run this oil in my truck, which pulls a racecar trailer on a weekly basis.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great
    By  ANDREW,  a  Verified Buyer  on  September 13, 2021

    Describe the issue

    Use this in my 26 year old F350. Still runs like new. It's my farm truck.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    20w50
    By  Tim,  a  Verified Buyer  from  Georgia  on  September 08, 2021

    Describe the issue

    great oil for my old big block ford highly recommend
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    20w50
    By  KATELYNN,  a  Verified Buyer  from  US  on  September 06, 2021

    Describe the issue

    Fast shipping and fantastic customer service. Will definitely be buying again
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    20-50
    By  GARY,  a  Verified Buyer  from  Madera ca  on  September 02, 2021

    Describe the issue

    got a new car they said 20-50 I said Amsoil
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    BMWs Hate The Heat!
    By  CHRISTOPHER J,  a  Verified Buyer  from  Washington DC  on  August 31, 2021

    Describe the issue

    I’ve almost always used BMW recommended products for my car. As I know my motor is higher compression and extended service intervals, I’ve chosen 20W50 Amsoil. This product is awesome and has met and exceeded my high standards.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Premium Protection 20W-50 Synthetic Motor Oil
    By  JIM,  a  Verified Buyer  from  Jensen Beach, FL  on  August 29, 2021

    Describe the issue

    Indisputably the best for our 1982 VW Westfailia Vanagon camp mobile!!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Long time Amsoil user
    By  Fred,  a  Verified Buyer  from  Tennessee  on  August 07, 2021

    Describe the issue

    Been using Amsoil products for over 25 years. Would never use any other oil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Outstanding engine oil for high mileage vehicles.
    By  ERIC,  a  Verified Buyer  from  Brandenburg Ky   on  July 22, 2021

    Describe the issue

    Would not hesitate to purchase any Amsoil product. I have a 1994 F350 with 200K plus miles and running strong thanks to Amsoil products.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?