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

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  5 star rating

  Based on 7,119 reviews

  Based on 7,119 reviews

  See all customer reviews

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  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Keeps my 2009 Lexus running like new 👍🏼
    By  ALFREDO,  a  Verified Buyer  on  September 20, 2026

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    Keeps my 2009 Lexus running like new
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Ram 2500 Hemi
    By  LARRY,  a  Verified Buyer  from  CA  on  September 20, 2026

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    Approximately 1,200 miles driven since I switched to the AMSOIL Signature 0W 40 Oil. I notice a smoother start up. A smoother running engine. A substantial increase in performance. I will definitely start running AMSOIL products in my other vehicles.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Great Oul for GDI Engine
    By  CRAIG,  a  Verified Buyer  from  Louisville  on  September 19, 2026

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    Great oil. All I use on my Kia Telluride.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Used in my new land cruiser
    By  JAMES,  a  Verified Buyer  on  September 19, 2026

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    Runs cool
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  ELLIOTT,  a  Verified Buyer  from  SC  on  September 19, 2026

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    Top Tier product
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Superior Engine Oil
    By  PETE,  a  Verified Buyer  from  Boston, MA  on  September 19, 2026

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    I am very happy with Amsoil products. Quieter morning start. Overall super happy with my engine performance.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    👍🏼
    By  BILL,  a  Verified Buyer  on  September 19, 2026

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    👍🏼
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Safe Bet
    By  TERENCE,  a  Verified Buyer  from  Amherst NY  on  September 18, 2026

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    With all the issues going on right now with motor oil due to war in the Middle East .This Oil only gets better. While other Big Oil companies lie and deceive about the problems they are having and formula changes , This is the only oil I trust
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    The best
    By  REINALDO,  a  Verified Buyer  on  September 18, 2026

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    I would not use any other oil. I've been using Amsoil for nearly 20 yrs.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    No problem so far with my trucks, one is over 300,000 miles.
    By  None,  a  Verified Buyer  from  Rock Point, Az  on  September 18, 2026

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    Oil is great, does the job. Just change the oil after 4.5k. No worries.
    Bottom Line

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

    YES (1) NO (0)

• 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

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  5 star rating

  Based on 7,119 reviews

  Based on 7,119 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Keeps my 2009 Lexus running like new 👍🏼
    By  ALFREDO,  a  Verified Buyer  on  September 20, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    Keeps my 2009 Lexus running like new
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Ram 2500 Hemi
    By  LARRY,  a  Verified Buyer  from  CA  on  September 20, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    Approximately 1,200 miles driven since I switched to the AMSOIL Signature 0W 40 Oil. I notice a smoother start up. A smoother running engine. A substantial increase in performance. I will definitely start running AMSOIL products in my other vehicles.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Great Oul for GDI Engine
    By  CRAIG,  a  Verified Buyer  from  Louisville  on  September 19, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    Great oil. All I use on my Kia Telluride.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Used in my new land cruiser
    By  JAMES,  a  Verified Buyer  on  September 19, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    Runs cool
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Great product
    By  ELLIOTT,  a  Verified Buyer  from  SC  on  September 19, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    Top Tier product
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Superior Engine Oil
    By  PETE,  a  Verified Buyer  from  Boston, MA  on  September 19, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    I am very happy with Amsoil products. Quieter morning start. Overall super happy with my engine performance.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    👍🏼
    By  BILL,  a  Verified Buyer  on  September 19, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    👍🏼
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Safe Bet
    By  TERENCE,  a  Verified Buyer  from  Amherst NY  on  September 18, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    With all the issues going on right now with motor oil due to war in the Middle East .This Oil only gets better. While other Big Oil companies lie and deceive about the problems they are having and formula changes , This is the only oil I trust
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    The best
    By  REINALDO,  a  Verified Buyer  on  September 18, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    I would not use any other oil. I've been using Amsoil for nearly 20 yrs.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    No problem so far with my trucks, one is over 300,000 miles.
    By  None,  a  Verified Buyer  from  Rock Point, Az  on  September 18, 2026

    Open report issue form

    Describe the issue

    Cancel Submit
    Oil is great, does the job. Just change the oil after 4.5k. No worries.
    Bottom Line

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

    YES (1) NO (0)