Customer Ratings & Reviews

I had about 116k on the 2021 10R140 F-350 transmission. Of that 116k, about 10-12k was heavy (26k trailer) pulling, maybe 20k moderate trailer pull, and the rest highway/in town driving. I started to notice some “shuddering” between gear shifts, and began dreading what I was about to witness when I dropped the pan, per stories from some friends and family. But, the pan drop and filter change was a pleasant surprise, as I did not see any metal particles, shavings, etc.. So I changed the filter, topped it off (about 8-9 qts) of Amsoil ULV ATF, and went back to driving. It shifts like a hydrostatic transmission now - smooth as silk. It is a world of difference. Pulled another 24k pound load a few days later, and same result - smooth. Before the fluid change, the transmission was hesitant on cold mornings, almost reluctant to do much of anything; I had to warm it up for a few minutes before it would engage. Now? Put it in gear and go. It performs like it did when I bought it. I’ve used Amsoil products for over 25 years, and they cannot be beat. These trucks cost too much and have too much potential for quirky problems to be running anything other than Amsoil, a superior product line that has consistently delivered more protection for decades than the big box store retail shelf or OEM brands could ever dream of offering.

I did my first transfer case fluid change this more. I cannot give a review yet, but I’m sure it’s better than the Mopar brand. I love all the Amsoil products I’ve used and will continue to use.

Replaced my trans filter and used the specified oil for my 2010 f150 at 120000 miles. I also installed an extra capacity pan requiring 9.5 quarts this made it convenient. The oil itself really made a difference you felt the difference in shifting way smoother

It’s the Best I can find

My car shifts smooth as soon as I got my transmission flushed on my car. Takes off very smoothly as well.

best oil in the market

Is the best oil I have bought it works great in my truck thank you

delivery was quick, product showed up as expected, filled my transmission in my F350 diesel

This product is rock solid on performance. Works well and last a long time even in hot Texas driving for long distances often.

Great gear oil and easy to use

After filter and oil change the transmission shifts smooth again. Shuttered before which it doesnt do anymore. Would buy again

I have a 2016 EcoDiesel, Amsoil Products are my go to for protecting and performance. I Tow a 7,000lb trailer and want the additional hi-temp protection when towing. I also use 5w-40 6x diesel oil for the same reasons!!

Orders always come in fast. After switching to amsoils transmission fluid my truck shifts noticeably smoother. Great product

I tow a lot over the Rocky Mountains and I need the best transmission fluid out there Since I switch to amsoil I have had no issues with temp. Amsoil fluid is by far the best out there for any job

Amsoil is awesome, I use it in all my vehicles.

Did a drain and fill on my 2011 Hyundai Elantra, only got about 40% of the fluid changed but the difference is there. Shifts are definitely smoother, impressed. I will do another drain and fill in the spring to get even more of the old maxxlife out of there.

I’ve been using this for years in my 08 F150 transfer case and it works great.

I have used this transmission fluid on my 2013 Lexus GS350 from the first fluid change at 40,000 miles. I now have 217,000 miles and the transmission is PERFECT. It is MUCH BETTER than Toyota's WS fluid in my opinion. It is more robust, the inside of the transmission looks like NEW. AMSOIL FOREVER!!!!

vraiment intéressant1; le contenu est de qualité supérieur et que dire du contenant, vraiment utile. Pas besoin d'utiliser une pompe manuel!

Purchased to refill the Transfer case on our ‘22 Durango AWD. Easy to use. Seems to help make our SUV run smoother. Very pleased.