Customer Ratings & Reviews

I've used Amsoil 75W140 in every 4wd I've ever owned. This is tuff, slippery stuff. The new squeezable package is great, so much easier than using bottles.

Makes a difference when towing and off road. No more more burnt clutch smell!

Soft package makes it easy to maneuver. Quality seem nice, but time will tell.

Did my first diff lube change on my new to me 2017 GMC Sierra 1500 truck. Based on the tons of online and video recommendations, I decided to try Amsoil. The best part was the pouch bags for easy dispensing. Wish all manufacturers did this. Look forward to the next easy diff lube change in 40K miles. Thanks for the excellent products.

I replaced my differential oil with Amsoil. I have used Amsoil in my Cummins for years with no problems. I have done research on oils and Amsoil is the best out there for all their products. Amsoil is awesome.

Use this in a cocktail mix in my manual transmission.

It feels like I have new bearings in my 4wd cummins

Love the squeeze bottle very easy to use!

This is a great product, have used Amsoil gear lube since 1972. It has heat & friction reducing qualities that petroleum based products don't have. I can give you examples, if you wish, at another time.

This stuff is awesome. Hard to actually measure the lubricant qualities, but it's worth it just for the Easy Pack containers. SO much easier to use, especially in tight locations.

i really like this new packing, so much easier to use when i'm filling up my primary fluid

I like the fact that it does not have the friction additive so if your vehicle uses an LSD you can add that to the mix

Excellent product which I had no doubt. No more gear noise

Very easy to use, can reuse it by filling and squeezing over again

Easy to use in hard/accessible places and squeezable. Also can be reused by filling up again.

I love the easy pack, it makes putting the oil in the differential a breeze.

The age old battle of the bottles funnels and tubing is solved with this bag! My rear end oil swap took little to no effort to swap. Grab a bag and just go!

I had put a Banks Diff cover on the rear end of my 2018 GMC 3500. I originally purchased 4 quart as that is what AMSoil said I needed. It was not quiet enough so I had to purchase an extra quart to top off my rear end fill. This is a great product and the love the packaging

As with all of their oils this stuff is top notch. Love that it’s a 75W-110 since synthetic 75W-90s and 80W-90s tend to have a little too much slipperiness for some gear driven limited slip differentials like the Detroit TrueTrac. It actually calls for 80W-90 conventional but so far this stuff has worked like a dream. Will definitely buy again

After reading all the positive reviews about amsoil products I decided to give some a try myself. I am frequently towing well over my trucks factory capacity. Severe gear was a must try! Immediately after changing my rear differential oil I noticed my 1 ton pick up seemed to roll down the road with less drag. I also noticed half a mile to the gallon improvement in fuel economy. Doesn't sound like much but boy does it add up with fuel prices the way they are today.