Customer Ratings & Reviews

I used this for my front and rear diff of my 3500 Duramax in hopes of solving the humming noise that was emitting from my front diff. Despite multiple different oils and additives, nothing worked like AMSOIL and it was instant! As soon as I took it for a test drive it was gone! And no more leaking! My rear diff runs cooler even under load

Put new ring and pinions in my Jeep, after the 500 mile break in. I put AMSOIL in and have had no issues. I use AMSOIL in all my vehicles.

Fluid change in Jeep Cherokee from front differential, transfer case, transmission to rear differential.

Night and day difference compared to stock oil. It's not as thick as stock but performs way better. Shifting is smoother and the ride feels like it's gliding down the road. So glad I made the switch. Plus the price was half of what the dealer wanted.

Amsoil simply has no equal I would recommend their product line to anyone wanting the best protection an oil can provide

work great! smooth running! love it

Great Product

I have been using amsoil motor oil so when I bought a Banks rear end cover I ordered the amsoil to fill it with the best oil that I know of and trust for my Dually

Changed this gear oil last week on my 2015 Mercedes SL550 with 25,000 miles on the vehicle. Not sure if anyone could tell the difference from driving it, but with Amsoils reputation I'm certain it's the best I could use. That's all you can ask for.

No more noises more miles less gas. On the mark Amsoil as always Thank You.

I use all Amsoil products

Makes it much easier without pump to get it in tight spots.

I used it in my highlander for both front and rear def. I might use their engine oil 0-20 for the highlander and also my Acura TL but it is little pricey.

The fluid in my rear diff didn't look or smell burnt, however, I had a slight whine and occasional squirmy feeling at the limits of cornering when a single tire would break loose before the other. Amsoil Sever Gear alleviated both issues and combined with engine and transmission oil I have gained a not insignificant amount of mpg as a nice extra benefit!

I use Amsoil gear lubes in all of my cars for top level wear and corrosion protection.

Shipping was quick and can’t go wrong using amsoil

Want your stuff to last use this

Makes that 6 speed change better

Have been using in my GMC Sierra 2500HD for years. I tow a 5th wheel to the maximum weight capacity of my rig. Works great so far and no issues.

Replaced oil in my front and rear differentials. I’m sure it will be better than OEM. At a better price