About this item

• Product Overview

  SEVERE GEAR is designed for those who demand the best. Engineered with high film strength for high-load demands. Reduces friction and provides the ultimate protection against wear. Excels in extreme temperatures. Helps maintain efficiency and outperforms conventional gear oils. Excellent for all cars and trucks, but especially well-suited for towing, hauling, racing, commercial use or other severe duty.

  See the product data sheet for full details.

  EXCELS IN TEMPERATURE EXTREMES

  • Delivers excellent performance in hot and cold temperature extremes.
  • Resists breakdown from high heat, preventing acids and carbon/varnish formation.
  • Wax-free construction improves cold-flow properties, improving fuel economy and cold-weather shifting.

  ---

  MAXIMUM WEAR PROTECTION

  • Specifically engineered for maximum performance in severe-duty applications.
  • Maintains viscosity for long-lasting protection against metal-to-metal contact.
  • Proprietary AMSOIL additives form an iron-sulfide barrier coating on gear surfaces, providing the ultimate line of defense against wear, pitting and scoring.
  • Helps prevent "thermal runaway," a phenomenon caused by a lubricant’s inability to control friction and increased heat under high-stress conditions.
  • Inhibits rapid lubricant degradation and component damage, helping equipment run better and last longer.

  *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.

   

  See the product data sheet for full details.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  4.9 star rating

  Based on 1,142 reviews

  Based on 1,142 reviews

  See all customer reviews

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  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Does what it should
    By  Crazycanuck6,  a  Verified Buyer  from  Ontario Canada   on  June 02, 2026

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    Put this in my 2015 camaro ss dif. It seems to work so far
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    I feel confident in Amsoil
    By  Duke,  a  Verified Buyer  from  Claremore, OK  on  May 31, 2026

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    I had some significant noise coming from my driveline, I have a 2016 Ram 1500 4x4 and figured it had to be the differentials, it was, used the severe gear and noise gone. Very quite ride now. I pull a compact tractor frequently to severe gear was the way to go.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Amsoil
    By  JIM,  a  Verified Buyer  from  Home  on  May 29, 2026

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    Quality product, stellar reputation, easy to use!
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Easy fluid change
    By  TIM,  a  Verified Buyer  on  May 28, 2026

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    Love the squeeze containers, convenient, fast, and clean fluid change. Peace of mind knowing I won’t have to do it again for a while with the Amsoil fluid.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Long time consumer
    By  JAIRO,  a  Verified Buyer  from  Danvers MA  on  May 23, 2026

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    Running this on all my trucks for over 200000 miles on heavy duty towing,, very minimal wear on my differentials. Extremely recommended!!
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Differential fluid
    By  DANIEL,  a  Verified Buyer  from  Hoschton Ga  on  May 12, 2026

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    The bags made the job super easy!
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    Wish I changed sooner
    By  CHRIS,  a  Verified Buyer  from  Florida  on  May 11, 2026

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    Severe gear in diff on Challenger R/T, definitely smoother and quieter. OE gear oil looked like metallic paint at only 4,000 miles
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Rated the best so I used it
    By  ROBERT,  a  Verified Buyer  on  May 10, 2026

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    I like the review on the oil
    Bottom Line

    Yes, I would recommend this to a friend.
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    YES (0) NO (0)
  • 5 star rating
    As advertised
    By  RYAN,  a  Verified Buyer  from  Camlachie, Ontario  on  May 08, 2026

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    Great product and functions excellent in my Ram 1500
    Bottom Line

    Yes, I would recommend this to a friend.
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  • 5 star rating
    easy to use filling a differential
    By  hockey ron,  a  Verified Buyer  from  Winnipeg  on  May 07, 2026

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    packaging is perfect to use when filling the diff on my truck
    Bottom Line

    Yes, I would recommend this to a friend.
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• Highlights

  • Advanced protection against wear
  • Controls thermal runaway
  • Protects against rust and corrosion
  • Helps reduce operating temperatures
  • Long oil, seal & equipment life
  • Contains friction modifiers for limited-slip applications
• 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

  SEVERE GEAR is designed for those who demand the best. Engineered with high film strength for high-load demands. Reduces friction and provides the ultimate protection against wear. Excels in extreme temperatures. Helps maintain efficiency and outperforms conventional gear oils. Excellent for all cars and trucks, but especially well-suited for towing, hauling, racing, commercial use or other severe duty.

  See the product data sheet for full details.

  EXCELS IN TEMPERATURE EXTREMES

  • Delivers excellent performance in hot and cold temperature extremes.
  • Resists breakdown from high heat, preventing acids and carbon/varnish formation.
  • Wax-free construction improves cold-flow properties, improving fuel economy and cold-weather shifting.

  ---

  MAXIMUM WEAR PROTECTION

  • Specifically engineered for maximum performance in severe-duty applications.
  • Maintains viscosity for long-lasting protection against metal-to-metal contact.
  • Proprietary AMSOIL additives form an iron-sulfide barrier coating on gear surfaces, providing the ultimate line of defense against wear, pitting and scoring.
  • Helps prevent "thermal runaway," a phenomenon caused by a lubricant’s inability to control friction and increased heat under high-stress conditions.
  • Inhibits rapid lubricant degradation and component damage, helping equipment run better and last longer.

  *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.

   

  See the product data sheet for full details.

• Technical Specifications
  Data Bulletin

  Data Bulletins

  Warranty

  WARRANTY

  SDS

  SDS

  
  
  
• Product Reviews
  4.9 star rating

  Based on 1,142 reviews

  Based on 1,142 reviews

  See all customer reviews

  Sort by

  Most Recent Most Helpful Highest Rating Lowest Rating Oldest

  • 5 star rating
    Does what it should
    By  Crazycanuck6,  a  Verified Buyer  from  Ontario Canada   on  June 02, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Put this in my 2015 camaro ss dif. It seems to work so far
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    I feel confident in Amsoil
    By  Duke,  a  Verified Buyer  from  Claremore, OK  on  May 31, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I had some significant noise coming from my driveline, I have a 2016 Ram 1500 4x4 and figured it had to be the differentials, it was, used the severe gear and noise gone. Very quite ride now. I pull a compact tractor frequently to severe gear was the way to go.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Amsoil
    By  JIM,  a  Verified Buyer  from  Home  on  May 29, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Quality product, stellar reputation, easy to use!
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Easy fluid change
    By  TIM,  a  Verified Buyer  on  May 28, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Love the squeeze containers, convenient, fast, and clean fluid change. Peace of mind knowing I won’t have to do it again for a while with the Amsoil fluid.
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Long time consumer
    By  JAIRO,  a  Verified Buyer  from  Danvers MA  on  May 23, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Running this on all my trucks for over 200000 miles on heavy duty towing,, very minimal wear on my differentials. Extremely recommended!!
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Differential fluid
    By  DANIEL,  a  Verified Buyer  from  Hoschton Ga  on  May 12, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    The bags made the job super easy!
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Wish I changed sooner
    By  CHRIS,  a  Verified Buyer  from  Florida  on  May 11, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Severe gear in diff on Challenger R/T, definitely smoother and quieter. OE gear oil looked like metallic paint at only 4,000 miles
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    Rated the best so I used it
    By  ROBERT,  a  Verified Buyer  on  May 10, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    I like the review on the oil
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    As advertised
    By  RYAN,  a  Verified Buyer  from  Camlachie, Ontario  on  May 08, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    Great product and functions excellent in my Ram 1500
    Bottom Line

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

    YES (0) NO (0)
  • 5 star rating
    easy to use filling a differential
    By  hockey ron,  a  Verified Buyer  from  Winnipeg  on  May 07, 2026

    Open report issue form

    Describe the issue

    Failed to verify captcha

    Cancel Submit
    packaging is perfect to use when filling the diff on my truck
    Bottom Line

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

    YES (0) NO (0)