About this item

• Product Overview
  Compare Motor Oil

  Compare Motor Oil

  

  	Signature Series	Extended-Life (XL)	High-Mileage	Hybrid	OE
  Wear Protection
  Engine Cleanliness
  Service Interval
  Extreme Temp Performance
  Corrosion Protection
  Oil-Consumption Control
  Viscosity Control
  Leak Protection
  Severe-Service Protection

  View Full Image

  Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best motor oil. The result: engine protection that blows the doors off the highest industry standards.

  See the Product Data Bulletin for full details.

• Technical Specifications
  Data Bulletin

  Data Bulletins (English)

  Data Bulletins (Français)

  Warranty

  WARRANTY

  SDS

  SDS

  SDS (French)

  
  
  
• Product Reviews
  5 star rating

  Based on 7,192 reviews

  Based on 7,192 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    2026 Chevy trac
    By  DENNIS,  a  Verified Buyer  from  Pensacola   on  October 22, 2026

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    First oil change at 1,000 miles. Only oil I trust to protect my new engine
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Stuff works great
    By  ALEX,  a  Verified Buyer  from  AZ  on  October 21, 2026

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    Man I really love this stuff. And with modern engine tolerances, I don't worry about running this stuff in my car.
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Great Product
    By  BRIAN,  a  Verified Buyer  from  AZ   on  October 21, 2026

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    I have used Amsoil for over a decade for my corvette and never I have been so impressed with a product, quality and service and Price with order direct from Amsoil!!
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    My experience with AMSOIL
    By  JAMES,  a  Verified Buyer  from  Mississippi   on  October 21, 2026

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    I’ve been using AMSOIL signature series products for 3 years now and have ZERO complaints I’ve never had an issue with my order and the AMSOIL products are the only lubricants on earth that actually live up to the hype. Amsoil is the only oil you can safely run extended drains with. I’ve had nothing but good results with every product I’ve bought from AMSOIL. The gear oil and engine oil are by far some of the best lubricants ever made
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

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  • 5 star rating
    Amazing quality
    By  MICHAEL,  a  Verified Buyer  from  Canada  on  October 21, 2026

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    I run this oil all winter in both our vehicles and it is just great. Both cars run like new. The detergents and quality, are just second to none. It also ships so fast. Love ams oil.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Best oil around
    By  CHRIS,  a  Verified Buyer  from  Michigan  on  October 20, 2026

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    The best oil to use on anything!
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Synth Motor Oil
    By  RALPH,  a  Verified Buyer  from  MN  on  October 20, 2026

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    Great oil that has been proven and protecting my engine over 200k miles!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Great oil
    By  HAROLD,  a  Verified Buyer  on  October 19, 2026

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    Been using for 14 years and always delivered on time .
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Great oil
    By  PAUL,  a  Verified Buyer  on  October 19, 2026

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    When I bought my new to me 2008 Honda Element EX, it had 165,000 miles. The owner described vtec problems and 'the code'. I changed the screen behind the solenoid valve and at the same time switched to Amsoil Signature Series 5w-20 and filter. Since then the vtec issues haven't come back even though the oil change intervals have been 15k yearly. Now at 256,000 miles it still runs great!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Supercharged F150 5.0
    By  DAVE,  a  Verified Buyer  from  Illnois  on  October 19, 2026

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    Been Running 5w50 Signature since my second oil change. Previously ran Motorcraft 5w50 synthetic but it dropped out of grade between changes. Both Whipple and Ford require 5w50 in supercharged 5.0 platforms. This is a daily driver with short trips on weekdays. Oil analyzed at every change with very low wear metals. Change oil and filter @ 5K, this oil stays in grade.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

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• Highlights

  A New Level of Motor Oil Technology

  • 75% more engine protection against horsepower loss and wear.¹
  • 50% more cleaning power vs. AMSOIL OE Motor Oil
  • Protects turbochargers 72% better than required² by the GM dexos1 Gen 2 specification.
  • 28% more acid-neutralizing power than Mobil 1.³
  • Trusted by professional engine builders
  • Guaranteed protection for up to 25,000 miles or 1 year

  ¹Based on independent testing of AMSOIL Signature Series 0W-20 using the ASTM D6891 standard test.
  ²Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
  ³Based upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased in July 2020.

• Returns

  We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.

• Payments

  We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.

• Product Overview
  Compare Motor Oil

  Compare Motor Oil

  

  	Signature Series	Extended-Life (XL)	High-Mileage	Hybrid	OE
  Wear Protection
  Engine Cleanliness
  Service Interval
  Extreme Temp Performance
  Corrosion Protection
  Oil-Consumption Control
  Viscosity Control
  Leak Protection
  Severe-Service Protection

  View Full Image

  Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best motor oil. The result: engine protection that blows the doors off the highest industry standards.

  See the Product Data Bulletin for full details.

• Technical Specifications
  Data Bulletin

  Data Bulletins (English)

  Data Bulletins (Français)

  Warranty

  WARRANTY

  SDS

  SDS

  SDS (French)

  
  
  
• Product Reviews
  5 star rating

  Based on 7,192 reviews

  Based on 7,192 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    2026 Chevy trac
    By  DENNIS,  a  Verified Buyer  from  Pensacola   on  October 22, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    First oil change at 1,000 miles. Only oil I trust to protect my new engine
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Stuff works great
    By  ALEX,  a  Verified Buyer  from  AZ  on  October 21, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Man I really love this stuff. And with modern engine tolerances, I don't worry about running this stuff in my car.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Great Product
    By  BRIAN,  a  Verified Buyer  from  AZ   on  October 21, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I have used Amsoil for over a decade for my corvette and never I have been so impressed with a product, quality and service and Price with order direct from Amsoil!!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    My experience with AMSOIL
    By  JAMES,  a  Verified Buyer  from  Mississippi   on  October 21, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I’ve been using AMSOIL signature series products for 3 years now and have ZERO complaints I’ve never had an issue with my order and the AMSOIL products are the only lubricants on earth that actually live up to the hype. Amsoil is the only oil you can safely run extended drains with. I’ve had nothing but good results with every product I’ve bought from AMSOIL. The gear oil and engine oil are by far some of the best lubricants ever made
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Amazing quality
    By  MICHAEL,  a  Verified Buyer  from  Canada  on  October 21, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I run this oil all winter in both our vehicles and it is just great. Both cars run like new. The detergents and quality, are just second to none. It also ships so fast. Love ams oil.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Best oil around
    By  CHRIS,  a  Verified Buyer  from  Michigan  on  October 20, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    The best oil to use on anything!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Synth Motor Oil
    By  RALPH,  a  Verified Buyer  from  MN  on  October 20, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Great oil that has been proven and protecting my engine over 200k miles!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Great oil
    By  HAROLD,  a  Verified Buyer  on  October 19, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Been using for 14 years and always delivered on time .
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Great oil
    By  PAUL,  a  Verified Buyer  on  October 19, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    When I bought my new to me 2008 Honda Element EX, it had 165,000 miles. The owner described vtec problems and 'the code'. I changed the screen behind the solenoid valve and at the same time switched to Amsoil Signature Series 5w-20 and filter. Since then the vtec issues haven't come back even though the oil change intervals have been 15k yearly. Now at 256,000 miles it still runs great!
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Supercharged F150 5.0
    By  DAVE,  a  Verified Buyer  from  Illnois  on  October 19, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Been Running 5w50 Signature since my second oil change. Previously ran Motorcraft 5w50 synthetic but it dropped out of grade between changes. Both Whipple and Ford require 5w50 in supercharged 5.0 platforms. This is a daily driver with short trips on weekdays. Oil analyzed at every change with very low wear metals. Change oil and filter @ 5K, this oil stays in grade.
    Bottom Line

    Yes, I would recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)