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SEVERE GEAR® 75W-140

Product code : SVOPK-EA

Advanced protection against wear, even with up to 15 percent water contamination1
Controls thermal runaway
Protects against rust and corrosion
Helps reduce operating temperatures
Long oil, seal & equipment life
1Based upon AMSOIL testing of AMSOIL Synthetic SEVERE GEAR® 75W-90 and Long-Life 75W-90 Synthetic Gear Lube in ASTM 3233 and ASTM D892.

Advanced protection against wear, even with up to 15 percent water contamination1
Controls thermal runaway
Protects against rust and corrosion
Helps reduce operating temperatures
Long oil, seal & equipment life
1Based upon AMSOIL testing of AMSOIL Synthetic SEVERE GEAR® 75W-90 and Long-Life 75W-90 Synthetic Gear Lube in ASTM 3233 and ASTM D892.

SEVERE GEAR® 75W-140



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 Bulletin for full details.

Temperature Extremes

  • Excels in hot and cold temperature extremes.
  • Resists breakdown from high heat, preventing acids and carbon/varnish formation.
  • Wax-free construction also improves cold-flow properties, improving fuel economy and cold-weather shifting.
  • Delivers 20 percent more cold-temperature protection than required by the industry standard.
SEVERE GEAR 75W-90 Synthetic Extreme-Pressure (EP) Gear Lube

Some gear lubes fail to meet basic low-temperature requirements. Mobil 1 75W-140 Gear Oil, for example, failed to meet the requirements of the industry standard2. SEVERE GEAR, on the other hand, delivers 20 percent more cold-temperature protection than the standard requires.



See the Product Data Bulletin for full details.

2Based upon results of samples of Mobil 1 75W-140 and Valvoline SynPower 75W-140 purchased in 2018 and tested in ASTM D2983 by an independent testing facility in May 2018. Samples sent blind to eliminate bias.
*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.

SEVERE GEAR® 75W-140



SEVERE GEAR® 75W-140

  • 5 star rating
    Best oil around
    By  TODD,  a  Verified Buyer  from  Idaho  on  May 21, 2022
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    Amsoil simply has no equal I would recommend their product line to anyone wanting the best protection an oil can provide
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    for atv!
    By  FRED,  a  Verified Buyer  from  sturgis mi  on  May 21, 2022
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    work great! smooth running! love it
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Severe Gear 75/90
    By  BRENT,  a  Verified Buyer  from  Rear end   on  May 12, 2022
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    I have been using amsoil motor oil so when I bought a Banks rear end cover I ordered the amsoil to fill it with the best oil that I know of and trust for my Dually
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Severe Gear differential fluid change
    By  LARRY,  a  Verified Buyer  from  North Myrtle Beach, SC  on  May 08, 2022
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    Changed this gear oil last week on my 2015 Mercedes SL550 with 25,000 miles on the vehicle. Not sure if anyone could tell the difference from driving it, but with Amsoils reputation I'm certain it's the best I could use. That's all you can ask for.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    silence is golden
    By  DAVID,  a  Verified Buyer  on  May 08, 2022
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    No more noises more miles less gas. On the mark Amsoil as always Thank You.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Gear lube
    By  ALAN,  a  Verified Buyer  from  Indiana   on  May 04, 2022
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    I use all Amsoil products
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Worth it for the bag
    By  BRUCE,  a  Verified Buyer  on  May 04, 2022
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    Makes it much easier without pump to get it in tight spots.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great stuff
    By  JOHN,  a  Verified Buyer  from  NJ   on  May 01, 2022
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    I used it in my highlander for both front and rear def. I might use their engine oil 0-20 for the highlander and also my Acura TL but it is little pricey.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    No whine & improved feel
    By  APEXSRT,  a  Verified Buyer  on  April 29, 2022
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    The fluid in my rear diff didn't look or smell burnt, however, I had a slight whine and occasional squirmy feeling at the limits of cornering when a single tire would break loose before the other. Amsoil Sever Gear alleviated both issues and combined with engine and transmission oil I have gained a not insignificant amount of mpg as a nice extra benefit!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The best!!!
    By  NICHOLAS,  a  Verified Buyer  from  Brooklyn   on  April 26, 2022
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    I use Amsoil gear lubes in all of my cars for top level wear and corrosion protection.
    Bottom Line
    Yes, I would recommend this to a friend.
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