Customer Ratings & Reviews

Easy to get into diff fill port. Holds up to heat as designed to do.

Replaced my bmw diff fluid with Amsoil once when I got the car new (to me) @40k miles and once just because at 50k miles and the fluid still looked brand new with no residue on the magnetic drain plug. I trust Amsoil and all their products 100%

super smart package, even partially reuseable!

Love the packaging. I use this trusted product for the "quick change" in my race car and the easy pack makes changing gear ratios much faster, cleaner, and easier.

Truck required 6.9 pints, I was shipped 7 quarts did not see until opened all. I guess I have a few extra

Does as advertised and really liked the bottle design with it being easier to fill the differential than a traditional hard bottle. Differential feels good and smooth so only time will tell how well the oil holds up.

Does as advertised and really liked the bottle design with it being easier to fill the differential than a traditional hard bottle. Differential feels good and smooth so only time will tell how well the oil holds up.

All of the products I have used from Amsoil are awesome and work as they should and are of the highest quality!! I have noticed much better performance in my 2017 Silverado 1500 4x4 and my fuel economy has gone up 3mpg after using Amsoil products!!

I have a 1995 F-350 4x4 crew cab, it only has 51,000 original miles, I’m putting this all around, I sometimes pull my gooseneck with my OBS. So I definitely wanna keep my rear end cool because I’ll be pulling very heavy.

I have been rock crawling for at least 10 years now. Broke numerous axles but haven’t had a differential failure which I credit it to using Amsoil products. Great stuff.

product is ok and has done the job but this web sites is not the most cost effective place to buy. It is fortunate that I had bonus money on site to keep it competitive.

Installed the severe gear oil in my wife’s Tacoma, she thought I did something drastic to it. By drastic ; I mean that she thought it free wheels better I.e less drag. She checked mileage and it was 5.5 mpg better. What more could you ask for. Thank you for a superior product

When I was at the Lone Star rally I visited the AMSOIL tent and talked to the reps about fluids. I got this for 2009 Harley Davidson Softail Deluxe. I had just resigned the fact that neutral would always be impossible to hit and it would always be a loud and stiff transition from one gear to the other. I did the fluid change and replaced what I had with Severe Gear 75W-140 and the difference is amazing! So much quieter and smoother!

Ran this in my 2007 GMC 2500 and now in my 2018 Chev 3500. So far everything is great. Changed my 2007 every 100K miles and same plan for the 2018. Never an issue with my 2007.

The oil change was super easy with these squeezable pouches! I didn't have to fumble with any transfer pumps or anything of the sort, just open and pour. Just a tip, if your rear end requires the Ford friction modifier, open and pour into a pouch and shake it up a bit.

I am a Master Toyota Certified Technician. I own a 2020 Toyota Tacoma, after installing the severe gear in the front and rear differential’s , I immediately noticed a difference in the way the truck rolled down the road. Effortlessly and smooth. I have co-workers that have the same trucks; needless to say they were blown away. They are going to service their differential’s with severe gear. Awesome product. I personally wouldn’t use anything but severe gear in any of my trucks.

Put 75-90 in gearbox and final drive in my 2020 Ural Gear Up. Also full synthetic 20-50 motorcycle oil in the engine. The few miles I've been able to ride, I've noticed smoother shifting and the engine seems to love it. Got it ready for bike week in Daytona. I'm Amsoil ready!

Best in the business

High quality gear oil, very well packaged and fast delivery.

This form of packaging is easier to use than a plastic bottle with a pump absolutely more efficient