Customer Ratings & Reviews

Ive been running this in my mustang every year since 2013 and havent had any sign of wear or anything in the 8.8 rear differential. LSD still works fine and kicks in when it needs to. 440,000km and counting!!

Package works great, no transfer pump needed.. Amsoil is a known excellent product with a proven past.

Little pricey but well worth the price!

Picked up a few packs of the severe gear oil as I needed to change the fluid in my ‘70 Oldsmobile. I use the Amsoil ZRod motor oil and swear by it, so Amsoil gear oil was my first choice. Gear oil was original as far as I could tell so who knows how old. The squeeze packs and super easy to fill without the need for a siphon pump or gadget. After the fluid change, it woke up the rear end of the car and is not only more responsive but smooth as well. Stick with the best, nothing else compares to Amsoil.

The squeeze bottle is a good idea. You can not beat the product.

Great product in a easy to use package.

Feels smoother

Do your research. This stuff is the best!

Used with friction modifier in the rear differential of our Camaro, which had been making noises during low speed parking lot turns. Now the limited slip and differential are quiet at any speed. Also used in the differentials on our quad and motorcycle. Would purchase again.

I think severe gear oil is the best gear lube out on the market it don’t break down like other gear oils since I been doing differential fluid service’s for over 35 years

This new packaging made fluid transfer so easy! Product itself works great.

I changed all fluids in my 2019 Silverado 2500 duramax. I tow 11,000lbs and wanted to keep my gears in good shape. It's been A month now and everything is running cool. I switched all my fluids to amsoil, rear and front differential, transfer case, transmission, oil and coolant. Truck is running cooler according to all gauges. I have test kitsch and will be keeping a close watch on longevity. Thanks amsoil for great, fast delivery.

Easy to use bags, Noticeably quieter gear boxes.

Another wonderful product works great!!!!

Switched from the purple company and this is a better product

I use this in my differentials and my transmissions, it has been nothing short of amazing! It's most noticeable in transmissions, with smoother engagement, easier cold-weather shifting, and keeping noise down.

Great lubricant. I can feel a difference in heat on differentials.

Best performance oil available! Best company support.

This Gear Lube has never let me down. I change it at regular intervals, despite its extended ability. Still, I know it is reducing friction and wear, and keeping the drivetrain in tip top shape.

Wow this absolutely blew my expectations! It’s a night and day difference between your traditional 80-90w.