Customer Ratings & Reviews

I have road-maintenance machines with several HD gear cases. These machines run in extremely dusty, dirty, and hot conditions. I have tried several different high-end gear oils in my gear cases and monitor my oil for gear and bearing wear. After trying many different "supposedly high-end, and expensive" gear oils, I found that Severe Gear 75w140 provides the best protection for wear and high temp stability in my machines. I have spent a lot of time and money testing, evaluating, and researching the best oil for my machines. My gear cases are extremely expensive, and need frequent oil changes due to the severity of their service. Amsoil is now my go-to gear oil, and I'm also finding success with the Amsoil motor oils for 4 cycle motors that get run very hard too. Good Job Amsoil!!

Time came for fluid change on diffs for Jeep Rubicon. Amsoil severe gear lube was my choice based on too much online research. I've used Amsoil for many years on many cars and is my go to choice. Found the Amsoil website to be easy to use and setting up the garage with my vehicles provides a lot of useful information about the fluid capacities for my cars. Thanks!

My 2015 Harley Ultra Limited shifts so smooth and quiet now. Also, I can find neutral much easier!

I recently had my Wrangler regeared and the new gears made some noise and seemed to have a little too much clearance. Because I tow a small boat now and then and Chrysler recommends a 75w-140 gear oil for towing instead of 80w-90. I put this oil in and the gear noise nearly vanished and rear end behaves much better.

Why have I waited so long to try these easy packs? I will always order these in the future, makes a messy job, so much easier! Well worth the extra pennies.

Amsoil products exceed all expectations, OE & mine!!! Instructor for HD Transportation, Electrical/Electronics, Exh Aftertreatment, & Maritime

Great product and a nice container that helps with input in tight places.

I Have used this oil in my Ram 3500s for years. It costs a little more but i believe it's the best oil you can pour into a differential. The easy pack is easier to use but the hard bottles better for pouring used oil into.

Go in everything I own👍

I love amsoil !

Better application for heavy use constant towing over OE product over service period

Smoother shifting and better application for severe use as in everyday towing for work

Great gear oil!

The only gear oil we run in our race cars

Got some for my WS6 and feel like it’s actually helping slightly in the acceleration department. Also the squeeze packets are legit and make the job 10x easier!!

Great stuff from a great company. So much easier to use in the bags in tight quarters. Great innovation!

Used it in my 2019 Dodge Challenger scat pack and made the diff sound a lot quieter and smoother as these cars are known to have noisy rear ends.

Great stuff!

Every product purchased has arrived quickly, and whether for my truck engine, differential or Harley wouldn't choose anything other. The proof of quality and dependability is found with little effort.

Long-time user of this product, but always bought the quart bottles. Several gadgets and transfer hoses later, I tried these flexi-cartons. Works like a charm, smaller trashcan usage afterwards, and stores in smaller space. Free shipping on a case was a bonus.