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

  AMSOIL Extended-Life 100% Synthetic Motor Oil is overbuilt for road warriors so you can confidently drive up to 20,000 miles or one year,² whichever comes first, between oil changes. A proprietary combination of advanced synthetic base oils and a boosted additive package promotes cleanliness and prolonged engine life. AMSOIL Extended-Life protection delivers peace of mind and convenience.

  See the Product Data Bulletin for full details. 

  RESISTS OIL BREAKDOWN

  • Maintains viscosity under the most extreme conditions.
  • Reduces excessive oil consumption, engine deposits, accelerated wear and difficult cold starts.

  PROTECTS PISTONS FROM LOW-SPEED PRE-IGNITION

  • Features unique chemistry proven to protect your engine against harmful effects of low-speed pre-ignition (LSPI).

  KEEPS ENGINES CLEAN

  • Fortified with detergent and dispersant additives.
  • Boosted additive package effectively neutralizes acids and resists sludge, corrosion and carbon deposits.

  REDUCES MAINTAINENCE

  • Outstanding protection benefits motorists, business owners and fleet managers.
  • Extended-drain intervals reduce expensive, time-consuming and inconvenient oil changes.
  • Extended drain intervals up to 20,000 miles or one year,² if you choose, allowing you to change oil on your schedule, reduce maintenance, save money and reduce waste oil.
• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  5 star rating

  Based on 1,454 reviews

  Based on 1,454 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Perfect
    By  COREY,  a  Verified Buyer  from  Alabama   on  June 02, 2026

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    The kit is perfect every time. Even comes with gloves. It’s the best oil you can get and never fails me.
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    For my turbomax
    By  JEREMIAH,  a  Verified Buyer  on  May 29, 2026

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    Bought this to keep my new 2026 turbomax running for as long as possible.
    Bottom Line

    No, I would not recommend this to a friend.
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  • 5 star rating
    Only the Best
    By  PAUL,  a  Verified Buyer  from  Florida, USA  on  May 16, 2026

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    I only use the best of the best when it comes to synthetic oils for my vehicle’s. I rely on Amisol’s guarantee of 20,000 mile coverage between oil changes.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    2 cycle
    By  KYLE,  a  Verified Buyer  from  Four oaks NC   on  May 16, 2026

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    By far the best I will ever use for my high performance outboard motor
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Good stuff!!!
    By  JUSTIN,  a  Verified Buyer  from  Illinois   on  May 11, 2026

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    Excellent oil
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    0W20 XL
    By  JK,  a  Verified Buyer  on  May 02, 2026

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    Have confidence, and rest easy knowing you have the best in your vehicle's crankcase!
    Bottom Line

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

    YES (1) NO (0)
  • 5 star rating
    Great product
    By  JUSTIN,  a  Verified Buyer  from  Texas  on  April 23, 2026

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    Love Amsoil. Shipping is always quick and easy. Love the convenience of having a great product shipped right to my door. Servicing my wife’s 2022 Audi A6 and my 2020 Ram 1500
    Bottom Line

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

    YES (1) NO (0)
  • 5 star rating
    motor oil
    By  TIM,  a  Verified Buyer  from  justice il  on  April 21, 2026

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    been using in all my cars since 2005,great,no more to say
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  • 5 star rating
    What i ordered
    By  MICHAEL,  a  Verified Buyer  from  Nevada  on  April 20, 2026

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    You pay for what you get
    Bottom Line

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

    YES (1) NO (0)
  • 5 star rating
    Still running
    By  CARL,  a  Verified Buyer  from  SE Arizona  on  April 20, 2026

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    I have been using Amsoil in our 2006 Dodge Caravan since we purchased it used in 2011. It is still running well and not consuming oil at 202k miles. Has Amsoil contributed to our good fortune? I can not know, but i will not risk switching to another oil.
    Bottom Line

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

    YES (2) NO (0)

• Highlights

  • 37% more cleaning power¹ to help keep your engine running smoother, longer.
  • Protects against LSPI
  • 20,000 miles of guaranteed protection between changes²

  ¹Compared to AMSOIL OE Synthetic Motor Oil.
  ²Normal Service – Up to 20,000 miles (32,000 km) or one year, whichever comes first, in personal vehicles not operating under severe service.

• 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

  AMSOIL Extended-Life 100% Synthetic Motor Oil is overbuilt for road warriors so you can confidently drive up to 20,000 miles or one year,² whichever comes first, between oil changes. A proprietary combination of advanced synthetic base oils and a boosted additive package promotes cleanliness and prolonged engine life. AMSOIL Extended-Life protection delivers peace of mind and convenience.

  See the Product Data Bulletin for full details. 

  RESISTS OIL BREAKDOWN

  • Maintains viscosity under the most extreme conditions.
  • Reduces excessive oil consumption, engine deposits, accelerated wear and difficult cold starts.

  PROTECTS PISTONS FROM LOW-SPEED PRE-IGNITION

  • Features unique chemistry proven to protect your engine against harmful effects of low-speed pre-ignition (LSPI).

  KEEPS ENGINES CLEAN

  • Fortified with detergent and dispersant additives.
  • Boosted additive package effectively neutralizes acids and resists sludge, corrosion and carbon deposits.

  REDUCES MAINTAINENCE

  • Outstanding protection benefits motorists, business owners and fleet managers.
  • Extended-drain intervals reduce expensive, time-consuming and inconvenient oil changes.
  • Extended drain intervals up to 20,000 miles or one year,² if you choose, allowing you to change oil on your schedule, reduce maintenance, save money and reduce waste oil.
• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  5 star rating

  Based on 1,454 reviews

  Based on 1,454 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Perfect
    By  COREY,  a  Verified Buyer  from  Alabama   on  June 02, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    The kit is perfect every time. Even comes with gloves. It’s the best oil you can get and never fails me.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    For my turbomax
    By  JEREMIAH,  a  Verified Buyer  on  May 29, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Bought this to keep my new 2026 turbomax running for as long as possible.
    Bottom Line

    No, I would not recommend this to a friend.
    Was this review helpful?

    YES (0) NO (0)
  • 5 star rating
    Only the Best
    By  PAUL,  a  Verified Buyer  from  Florida, USA  on  May 16, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I only use the best of the best when it comes to synthetic oils for my vehicle’s. I rely on Amisol’s guarantee of 20,000 mile coverage between oil changes.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    2 cycle
    By  KYLE,  a  Verified Buyer  from  Four oaks NC   on  May 16, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    By far the best I will ever use for my high performance outboard motor
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Good stuff!!!
    By  JUSTIN,  a  Verified Buyer  from  Illinois   on  May 11, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Excellent oil
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    0W20 XL
    By  JK,  a  Verified Buyer  on  May 02, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Have confidence, and rest easy knowing you have the best in your vehicle's crankcase!
    Bottom Line

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

    YES (1) NO (0)
  • 5 star rating
    Great product
    By  JUSTIN,  a  Verified Buyer  from  Texas  on  April 23, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Love Amsoil. Shipping is always quick and easy. Love the convenience of having a great product shipped right to my door. Servicing my wife’s 2022 Audi A6 and my 2020 Ram 1500
    Bottom Line

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

    YES (1) NO (0)
  • 5 star rating
    motor oil
    By  TIM,  a  Verified Buyer  from  justice il  on  April 21, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    been using in all my cars since 2005,great,no more to say
    Was this review helpful?

    YES (1) NO (0)
  • 5 star rating
    What i ordered
    By  MICHAEL,  a  Verified Buyer  from  Nevada  on  April 20, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    You pay for what you get
    Bottom Line

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

    YES (1) NO (0)
  • 5 star rating
    Still running
    By  CARL,  a  Verified Buyer  from  SE Arizona  on  April 20, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I have been using Amsoil in our 2006 Dodge Caravan since we purchased it used in 2011. It is still running well and not consuming oil at 202k miles. Has Amsoil contributed to our good fortune? I can not know, but i will not risk switching to another oil.
    Bottom Line

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

    YES (2) NO (0)