Customer Ratings & Reviews

This has been in my race car for several years and the gears show no signs of wear.

The product is worth it just for how easy it is to fill up your differential and not to mention it's the best differential oil on the market hands down. My actuator in my k1500 front differential engages faster I believe now for 4x4.

Changed the differentials and transfer case. Noticeable improvement in quickness and less noise. In addition, "felt" like it was a smoother transfer. Anecdotal at best for the moment. We'll see at the next interval what condition the oil is in. Due to that inspection, I don't think asking for an evaluation before a service interval is quite fair or accurate. That being stated, I am confident it will perform well.

Great product. Used on front and rear differentials for Ford and GM cars/trucks. Easy Packs are the way to go.

Easy to use bottle, Amsoil quality!

First time using but feels heavy. Can’t wait for change to see how it holds up

I use Amsoil gear oil in my Yamaha FJR1300 final drive. With the squeeze bag its super easy to add and its noticeably quieter in operation.

Fantastic packaging really makes changing transmission and differential oil changes, easy! No special tools required, even in the tight clearances under a Miata!

2019 Ram1500 longhorn 42k miles. Had a shudder at low speeds. Changed out with amsoil and everything is great!

I got the Severe Gear 75w-110 for the rear diff in my '04 S2000. While I like the idea of the squeeze bag, on the S2K the fill hole is oriented in such a way where it was just easier for me to use my trusty hand pump to get the oil in. So far so good. I haven't driven it really hard yet, but I have noticed that the diff is noticeably quieter. I'm pleased.

I use nothing but AMSOIL in every thing. My lawn mowers, Motor cycles, Cars, Truck, Transmissions, & Differentials, EVERYTHING!

the best gear oil I could ever ask for great easy to pour!!!

Quieted out the final drive and the bike runs smoothly.

This oil delivers in your rear end! The bag makes filling your rear end very easy. Excellent!

Great gear oil, highly recommend it. If you can ask for Eben!

Product packaging alone is enough for me to be happy with my purchase. Great customer service. Great price. Very happy my vehicle is running this gear oil.

I purchased this oil to change the front and rear differentials on my 2003 GMC 2500 HD 4 wheel drive pickup. The truck only has 72,000 miles on it but that was the original oil. After changing the oil I definietly noticed that it runs smoother. We will be pulling our 5 th wheel RV and an ATV with it next week so I'm looking forward to seeing how it pulls now. Definitely sold on the Amsoil products I use it in everything we have.

Highly recommend AMSOIL products, they are second to none. The squeeze bag makes for easy fill in hard to reach places.

This stuff is great. I use it in all my Harley transmissions

I have a 2021 Softail Low Rider S Harley-Davidson and I put this in my Primary and Transmission. They work great for the Low gear wine that Harley-Davidson's have when they are very hot and coming to stops in Low gears. I had the Amsoil Primary and Transmission Fluid specifically for the Primary and Transmission but, still could hear a little wine in Low gears when I was coming to a stop. With the 75w 140 Severe Gear Oil in the Primary and Transmission it is so low I can't hear it coming from the Transmission at all anymore. The other upside is with the 75w 140 Severe Gear Oil in the Primary I find Neutral very easy now even on slopes, hills, or uneven ground which I had trouble with all other oils I tried before this one. It's a little pricey but it will be worth it in the long run go ahead and pull that trigger you won't be disappointed. Amsoil Only in my Harley !!!