AMSOIL Signature Series 5W-20 Synthetic Motor Oil
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Signature Series 5W-20 Synthetic Motor OilHelp

The Next Generation in Motor Oil Technology

Signature Series 5W-20 Synthetic Motor Oil Product Image
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$12.05 Retail Price (USD)
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Product Code: ALMQT-EA
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AMSOIL Signature Series Synthetic Motor Oil is engineered to outperform conventional and synthetic motor oils. It combines industry-premier synthetic technology with AMSOIL premium additives in a unique formulation that exceeds the higher performance demands of modern engines. Signature Series delivers the performance and value upon which the AMSOIL reputation is built. The culmination of more than 40 years of expertise, its exclusive formulation raises the bar for motor oil performance.

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.

Protects Your Engine
AMSOIL Signature Series Synthetic Motor Oil provides outstanding anti-wear protection. It develops a strong fluid film that keeps metal surfaces separated while its robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. In the industry-standard Sequence IIIG Engine Test, AMSOIL Signature Series Synthetic Motor Oil delivered 75 percent more engine protection against horsepower loss and wear than required by a leading industry standard.** For details, see the Double-Length Sequence IIIG Engine Test Technical Study (G3320).

Maximizes Fuel Economy
Signature Series Synthetic Motor Oil is designed to maximize energy efficiency for optimum fuel economy. Unlike conventional oils, its uniform molecular structure helps it flow more freely and reduce friction between metal surfaces. Anti-friction additives are included to further improve energy efficiency.

Extends Drain Intervals
AMSOIL Signature Series Synthetic Motor Oil can extend drain intervals far beyond those recommended for conventional oils. Its unique synthetic formulation and long-drain additive system are inherently stable to resist oxidation and neutralize acids over longer periods. Signature Series is designed to deliver outstanding engine protection, cleanliness and performance over extended drain intervals. It reduces vehicle maintenance and waste oil.

Keeps Pistons Clean
Excess piston deposits can lead to pre-ignition and engine knocking, which results in lost power, reduced fuel economy and, in severe cases, engine damage. Signature Series’ premium additives and naturally high resistance to extreme heat help keep pistons clean for maximum engine performance. Signature Series prevents piston deposits 93 percent better than required to meet the latest API standard.**

Sequence IIIG

Excels in Extreme Temperatures
Signature Series resists thermal (heat) breakdown better than conventional and synthetic motor oils. It is heavily fortified with detergent and dispersant additives to help prevent sludge deposits and keep engines clean. Unlike conventional oils, Signature Series contains no wax, staying fluid in sub-zero temperatures for easier starting, improved oil flow and reduced wear.

Reduces Oil Consumption and Emissions
Volatility (burn-off) occurs when oil gets hot, causing high oil consumption and emissions. Signature Series resists volatility better than other oils, helping reduce oil consumption and emissions.

APPLICATIONS
AMSOIL Signature Series Synthetic Motor Oil is excellent for use in all types of gasoline-fueled passenger cars and light trucks. It is recommended for all domestic and foreign vehicles requiring any of the following performance specifications:

5W-20 (ALM): API SN (Resource Conserving), SM…; ILSAC GF-5, GF-4…; ACEA A1/B1; Ford WSS-M2C945-A, WSS-M2C930-A; Chrysler MS-6395; GM dexos1™ (supersedes 6094M) Fortified with detergents that exceed dexos1 sulfated ash specifications.

*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 AMSOIL-engineered for use in the applications shown.

COMPATIBILITY
AMSOIL Signature Series Synthetic Motor Oil is 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 its 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 motor oils.

SERVICE LIFE

  • Normal Service – Up to 25,000 miles, 700 hours of operation or one year, whichever comes first, in personal vehicles not operating under Severe Service.
  • Severe Service – Up to 15,000 miles, 700 hours of operation or one year, whichever comes first.

Severe Service: Primarily short trips (less than 10 miles [16 km]); turbo/supercharged engines; commercial or fleet vehicles; excessive idling; first-time use of AMSOIL motor oil in a vehicle with more than 100,000 miles; frequent towing, hauling, plowing or driving in dusty conditions.

  • Modified engines (non-stock) and those using E85 fuel are excluded from extended drain recommendations.
  • Change at the vehicle manufacturer’s recommended drain interval outside U.S. and Canada.
  • AMSOIL Ea® Full-Flow Oil Filters are designed for extended change intervals. With other brands, do not exceed six months or 10,000 miles unless longer intervals are recommended by the vehicle manufacturer.
  • Check oil regularly to maintain proper fill levels.

AMSOIL Ea® Full-Flow Oil Filters are designed for extended change intervals. They stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea Full-Flow Oil Filters.

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

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS). An SDS 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.

For warranty information, visit www.amsoil.com/warranty.aspx.

ALM Package Sizes
Code Package Size Unit of Measure Product
ALMQT (ALMQT-EA) Quart Each Signature Series 5W-20 Synthetic Motor Oil
ALMQT (ALMQT-CA) Quart Case of 12 Signature Series 5W-20 Synthetic Motor Oil
ALM1G (ALM1G-EA) Gallon Each Signature Series 5W-20 Synthetic Motor Oil
ALM1G (ALM1G-CA) Gallon Case of 4 Signature Series 5W-20 Synthetic Motor Oil
ALM30 (ALM30-EA) 30-Gallon Drum Each Signature Series 5W-20 Synthetic Motor Oil
ALM55 (ALM55-EA) 55-Gallon Drum Each Signature Series 5W-20 Synthetic Motor Oil
ALM27 (ALM27-EA) 275-Gallon Tote Each Signature Series 5W-20 Synthetic Motor Oil
More about AMSOIL Reviews

REVIEW SNAPSHOT®

by PowerReviews
AMSOILSignature Series 0W-30 Synthetic Motor Oil
 
4.9

(based on 714 reviews)

Ratings Distribution

  • 5 Stars

     

    (689)

  • 4 Stars

     

    (19)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (3)

99%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

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Best Uses

No Best Uses
    • Was this a gift?:
    • No (4)

Most Liked Positive Review

 

First time running Amsoil

I changed to amsoil from gm dexos as I wanted something better for my Cruze. After 10k of running dexos as it was included with the car, I switched to amsoil and immediately noticed...Read complete review

I changed to amsoil from gm dexos as I wanted something better for my Cruze. After 10k of running dexos as it was included with the car, I switched to amsoil and immediately noticed the engine running quieter than with dexos. I am happy with the change so far and am looking forward to see how it holds up as I only have 1500 miles on it so far. We'll see what happens when I get into my second oil change.

VS

Most Liked Negative Review

 

Not worth the hoops you have to jump through

The oil is good, but with the membership fee and high shipping costs I am going back to Mobile 1 as I did not see much if any of a difference. There is just...Read complete review

The oil is good, but with the membership fee and high shipping costs I am going back to Mobile 1 as I did not see much if any of a difference. There is just to many hoops they make you jump through. There should just be a cost to buy it and no membership fee that AMS Oil makes people think they are locked in to buying oil from them so they can "get the most of the membership". I think most people find annoying and just go buy another oil rather than pay high prices on top of shipping and also a fee just to buy it at a reasonable price.

Reviewed by 714 customers

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(1 of 1 customers found this review helpful)

 
5.0

Amsoil Products and Support

By 

from Sisters,OR

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

I have been using AMSOIL products since 1990. A mechanic introduced me and I have been using them in all of my vehicles ever since. As an example I started using AMSOIL in my 1988 4-Runner at 80,000 miles and at 225,000 no leaks and no burning. I have had occasion to call support to cross reference oil filters and have been very successful. Thank you!

  • How would you describe yourself?:
  • I'm a DIY handyman
 
5.0

Great products

By 

from San Antonio , Texas

Verified Buyer

Comments about Signature Series 5W-50 Synthetic Motor Oil:

Great product used it in a very high mileage vehicle haven't had any issues

  • How would you describe yourself?:
  • I'm a professional mechanic
  • What kind of vehicle/equipment do you have?:
  • 15 Jeep Grand cherokee
 
5.0

Great Product

By 

from Madras, Oregon

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

Yes Amsoil products in all cars, trucks, equipment, motorcycles, and a boat. Never had a problem. Had to do a top end rebuild on a motorcycle with over 300 hours on it. Valves were worn out but, the cylinder looked brand new! Amazing product.

  • How would you describe yourself?:
  • I'm a full-on gearhead
 
5.0

Highly Recommend this oil.

By 

from Sierra Vista, AZ

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

Since I switched to Amsoil in my wife's 1.6 liter ecoboost Escape it has been running smoother and quieter than with a competitor's oil.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Escape, Fusion , HD FLHXS, DR650.
 
5.0

This is the only brand oil I use!

By 

from Ojo Feliz, NM

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

I first used Amsoil in my GMC Yukon XL. I immediately noticed the difference. More power and better gas mileage. Since then, I've been using Amsoil in every vehicle I own and everything I own that has a motor: tiller, lawnmower, chainsaw, trimmer, weedeater, pressure washer, 4x4 truck, small SUV and my GTO.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Chevrolet, GTO, Hummer, Husqvarna
 
5.0

0w-20 Signiture Series full synthetic

By 

from Pittsburgh

Verified Buyer

Comments about Signature Series 0W-20 Synthetic Motor Oil:

This motor oil provides superior lubrication, engine cleaning, and fuel economy.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • Suv
 
5.0

Will keep using Amsoil in all my rides

By 

from Glendale, AZ

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

The product holds up under extreme heat and saves you repair cost.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • Harley, Scion and Hyundai
 
5.0

Great product

By 

from Michigan

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

.

  • How would you describe yourself?:
  • I love my vehicles / toys
 
5.0

excellent

By 

from portland or

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

excellent

  • How would you describe yourself?:
  • I use AMSOIL products for my business
  • What kind of vehicle/equipment do you have?:
  • niisan versa
 
4.0

The 5w30 works well for me

By 

from Fort Collins,CO.

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

I ave run amsoil 5w30 in my 05 2500 silverado for 12 years. Still runs like it brand new after 150,000+ miles. I change oil about every 6,000 miles and never had any wear problems or loss of power problems.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 05 Silverado 2500HD 6.0

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