Customer Ratings & Reviews

Same great gear oil, in a no (less) mess package under the car.

If you’ve read my other reviews you know I’m prejudiced toward Amsoil products, based on their performance. This time I’m taken aback at just how good this product is. I purchased a 1969 Mach 1 428SCJ with at least 45,000 miles and after checking its gear oil I think 145,000 miles might me closer as it was black as tar and the Traction Lok clutches slipped so badly it behaved like an open rear. I wondered if someone had swapped one in. I drained and refilled with this gear oil. A year later I repeated the process and this year I was going to do so again. However, the oil still looked clean AND the Traction Lok started working. I don’t know the formulation but I know I’m amazed!

Easy to use pouches and great quality product

First time using amsoil and I am very happy appears to be great quality and I swear it solved a very light tap noise I use to have when shaking the truck side to side Will start using amsoil for all of my fluids now

To line high-quality easy to use squeeze container my only choice for gear oil, and all my high-performance. Has Tree removable equipment andOff-Road Recovery vehicles. Customer for life.

I just aquired a 2004 Yukon XL with low mileage and minimal rust. One of the 1st things I did was change the front and rear differentials. Amsoil is the best so that is what I replaced it with. I have used it in the past and it never let me down.

I have used this oil before, but not with the friction modifier added. I don't need a friction modifier in my differential and I wish AMSOIL would bottle it without it in the package. If you're not responsible enough to add enough friction modifier to your differential oil when you change it (if it is needed), then you shouldn't be changing it. Some differentials need more friction modifier with the same amount of oil. AMSOIL or ANY oil may not have enough friction modifier for your differential in concentration for your application. You may need more. Some Differentials need more than 1 bottle. Is AMSOIL or ANY other oil concentrated enough with modifier to meet the needs of your application?

I have a 2021 Toyota Tacoma with 6000mi on her. Been switching factory fluids and I’m really impressed. Did my 1000/5000 oil change and just replaced rear diff. Whining noise went away from the rear end. Highly recommended Amsoil

Had a shutter in differential, used Mobil1 with an additive last time. Severe gear made a big difference. My truck is running smooth again. 06 Tacoma with tow package.

Serviced both differentials and installed a new Banks rear cover. They recommended the Amsoil for my truck. Very pleased with the oil and the lubrication on my gears. Will stay with Amsoil now.

Since changing the fluid in my front and rear differential, I notice that my vehicle (2021 Lexus IS 300 awd) accelerates very smoothly and quickly and is very quiet. I trust Amsoil products to ensure maximum performance and protection for my vehicle. I drive where there are many hills and steep roads , and this fluid resists thermal breakdown and protects the metal to metal surfaces of gears better than any other differential fluid I've used. Highly recommend.

I wanted to change the rear differential gear oil in my BMW M6. I'm very impressed with AMSOIL products and wanted to use the Severe Gear 75W-140 100% Synthetic. I glad that AMSOIL added 10W-60 100% Synthetic for my oil change.

Smooth shifting gear oil great for the off-road on my Jeep .

The gear sounds smoother and run cooler

I really like the squeeze package makes filling your rear end easy.

Bag leaked in shipping box

Love the packaging. Easy to squeeze in there

Bought this gear oil for my Tundra Truck. Easy to use pouch allowed me to fill the diff and transfer case with ease. will use again. great product.

I've used Amsoil in every one of my rear differentials since MY 2000. I have changed each of my vehicles rear axles into limited slip axles using an Eaton Truetrac and Amsoil severe gear has performed flawlessly in each one with no excessive slippage or grabbing. This differential oil is superior to any I've used in the past. I've used it in vehicles that were driven over 3500 mikes a month tomy current vehicle that rarely gets driven 3000 miles in 6 months and it's performed flawlessly.

Awesome product