Customer Ratings & Reviews

I replaced the 85w140 conventional in the 14-bolt full float rear axle in my '85 GMC with Severe Gear 75w110 and noticed the difference immediately! Gained at least 15 horsepower. Good stuff!

Working good. Truck pulls 15000lb camper 90% of the miles.

I've been using Amsoil for 6yrs now because the product gives my car and truck the most protection and life out of my vehicles , so buy choosing severe gear oil for my truck was the right choose , Thanks Amsoil.

Performs great.

this stuff rules my roost

I haven't been using amsoil for long, but I have been happy with everything I've purchased so far. Will continue to use amsoil fluids throughout our vehicles.

I tow and the temps are low

I have run Amsoil for years. Its the only fluids that I trust in my truck

I use this in my from and rear axles on my Toyota 4x4 and my Arm's. Have used this stuff for many years and love it

I use this product in all my vehicles. Wouldnt trust anything else. You get what you pay for and pay for what you get. Great stuff!

Excellent product for differential protection

I use 100% amsoil products. I have a modified camaro ZL-1 with 940 HP at the crank. The gear lube and engine perform flawlessly. I maintaing at least 3 to 4 lbs more oil pressure throughout the life of the oil. I will never switch brands.

Simply the best hands down. My trucks tow heavy in the most extreme heat conditions, this can be torture on gears. I typically run my trucks to about 500k then replace them. To date I have never had a single issue in the rear end at all, other than the occasional pinion seal. Do yourself a favor and step up to real protection.

I've just did the second diff service on my Toyota Tundra. The oil that came out still looked brand new after 30000 miles. I'll go longer on the next service for sure.

This stuff is great.

Amsoil does not control friction modifier, so if you have a limited slip diff don't use the gear oil alone!!!!!!

Noting but the best

Been using this in my Z06 Corvette for a few years with some track time and very happy with the product. No need for a limited slip additive. Changing it this spring.

Heavy gear oil, quality in ever bottle. Switched everything in my truck over to Amsoil, you can tell the difference too. She sure rolls easy and quiet too. Even put the full bypass system on with the dbl cans

Great oil!