AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube
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.
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.
This is what I need would just like a little more insight whether it’s for front or back
Was this review helpful?
5 star rating
Best Diff Oil Out There
By 
BigWaveDave, 
a 
Verified Buyer 
from 
Lake Havasu City AZ 
on 
June 02, 2025
I am a big fan of Synthetics, from my boats, off-road vehicles to my daily drivers. I use the Amsoil Severe Gear in my F350. I tow a lot of client boats in an extremely harsh (HOT) environment. Annually, I tow my 43-foot fifth wheel to the Sturgis Rally loaded up with motorcycles, gear, and supplies. I never have issues with my rear end, the Severe Gear coupled with an oversized AFE diff cover keeps the rear end cool and smooth
By 
WILLIAM, 
a 
Verified Buyer 
from 
Saint Petersburg, Florida 
on 
May 26, 2025
Outstanding Transaction
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Gear Oil
By 
BRANDON, 
a 
Verified Buyer 
from 
United States  
on 
May 26, 2025
Highly recommended
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Excellent Product Conveniently Packaged
By 
GJC, 
a 
Verified Buyer 
on 
May 22, 2025
Ordering and using this product is very easy. It is a top quality product that is packaged to easily enable getting the oil in the differential without any special tools. And disposing of the packaging is convenient as well.
Works perfectly in front and rear differential of AWD Genesis, pulled smoothly at low and higher speed acceleration, no grinding or jerking anymore.
I'll buy this again in a heartbeat!
Thank you for visiting www.amsoil.ca. Certain parts of this website may not function with Internet Explorer. To continue shopping with us, please update your browser using one of the options below.