Customer Ratings & Reviews

Hauling a 39ft 5th wheel and want extra protection. This oil is everything you need for heavy hauling.

I like the packaging/container that the oil was in. It actually proven to be very helpful and I have never used oil in this type of container before. For my particular application, this was absolutely awesome. Though before I ordered, I called customer support about questions on this product. And honestly, the lady didn’t even seem like she cared to talk to me. She did not seem enthusiastic and that she was just answering the phone call because she had no other choice lastly, I was supposed to get a free gift and it didn’t come with my order.

Im very pleased with my amsoil gear oil for my transmission

Excellent product

Great trusted product.

Great trusted product.

Easy drain & fill with the bag container instead of a bottle. At 28K diff fluid change made a noticeable difference in how quiet the gear noise was in my 2023 Ram 1500. I'll be putting it in my 2026 soon. Thumbs up Amsoil.

You can tell and feel the quality of this product

working out great

2022 Tundra hybrid. Shipment arrived on time and quickly. As per others the bags do make it easier to fill. I changed out both diffs, transfer case and transmission fluid partially. Since then my mileage has improved .5 litres per 100 km. Not huge however it is an improvement.

I did my research and found this to be the best solution. Book called for SAE 90 Since I dont haul freight just my stunt bike around Korea to ride. This works very well for what I do.

I have tried a bunch of trans fluid trying to get the trans shifting smooth on my 2016 Harley Davidson ultra. The AMSOIL severe gear is by far the best thing I have used, shifts are smooth and easy! Plus it looks clean. Good looking stuff going in. I use AMSOIL in the trans, primary and engine , absolutely love AMSOIL!

So easy to fill and no waste! Highly recommend this and is a great product.

very good replacement

very good replacement

75w85 severe gear is a yes for me! Decided to switch from oem toyota oils for differentials based on others suggestions. Bought 7 just incase and used 5.8 for both, even with a little shot to flush each oil after drain, so you 6 needed for those wondering. As a very picky person who CDO (OCD, alphabetically the way it should be) I can say for sure the fluid made a notable improvement, especially with the light humming sound when I was in 4x4 that is now gone with the new fluid. The fill bags are a great benefit as well. Cut one fill cap and moved it to the next bag, draining the last of each used bag into the next as I filled. Only wish Amsoil would come out with a 75w gl4 for the transfer case oil to help avoid the #120 a liter oem oil. New to Amsoil and a can now be considered a new and growing fan boy. Thanks to the engineering team at Amsoil for their incredible product.

My Diesel Ram and my motorcycles run on AMSOIL I have us this products for years they manufacture the best lubricants.

The High Quality of the 80W90 convinced me that I should use ALL of the Amsoil products made for my Duramax truck. I see now why once someone uses this brand of gear and engine oil- they never use anything else

Replaced the fluid in my Mustang gt. I did it preventative and didn’t notice any changes however I think it’s better quality than Motorcraft.

Hi I am very happy with this product it is a high quality product that I can completely count on at every level .