Customer Ratings & Reviews

2008 Cadillac xlr with 90,000 miles, good for another 90 .

Used in transfer case, worked great. Thanks

only fluid i use in my c7 vette!

Changed ATF and transfer case fluid on a Ram 3500. They recommend 60k between changes so I used the Signature Series. Only negative is there's no way to drain the torque convertor like was done many years ago. I don't have a way to flush it. Will see how it works in this work truck.

To me anything from Amsoil is better then other brands. You will notice the difference in transmission smoothness and shifting.

Best oil ever for my tranny

Have Nissan frontier with 353000km and been using amsoil lubricants...truck runs like a sewing machine...squeeze packs are amazing!

Switched to SS in my '19 GT350 made shifts much smoother in the tremec. Also switched my '04 Vibe and '10 Forester over. Transmissions both shift smoothly and I don't worry thermal breakdown even though the vibe only takes just under 4 quarts.

I’m driving a 2005 Toyota Corolla with 267,000 km and has been using the Toyota ATF. In the last few years, I noticed the shifting had become more and more noticeable and less smooth. After I recently changed to Amsoil ATF, the shifting is much smoother and barely noticeable. I has become a fan of Amsoil.

It seems to be a fine product. I like the package. It’s easy to use in tight spots.

This is great packaging ,saved a great amount of time filling transfer case . Oh and the oil is as usual the best to use !!!!!!

Oh the design of the easy pour bag was very easy to put in my transfercase

Well worth it.

2014 ram ecodiesel. Getting better fuel economy and lower temps. Can barely feel the shifts now. Amazing the difference over the stuff that came in there not sure if I can say what it is......

All Amsoil products are the best you can use. I wouldn’t think of using anything less. Customer service is always a pleasure..Thanks Amsoil.

Everyone scares you into buying the Mopar $27 per quart "special" transmission fluid. I run the signature series through mine and I bet it exceeds the manufacturer brand at a little bit lower price. My only regret is not doing it sooner as "I too" was scared about the process and costs of changing the fluid. After shedding my fear of it I did the job twice now because you don't get all the fluid on the first drain. "On my vehicle" I got about 4 quarts per drain. So I bought 9 quarts total. Drained 4, filled 4, drained 4, filled 5 the 2nd time because I imagine over 90,000 miles some had to burn off somewhere. Transmission light didn't come on before my first drain, and it's not on now and I don't leak a drop. Transmission feels alot better. I feel like the power the engine is trying to put to the wheels is snapper, and smooth. I have much more control over the gas pedal because I don't feel like I'm have to fight or "understand" the linkage between the engine and tranny. Hope this helps someone. I may try a few more of these products in the future.

Helped my transmission to shift and drive more smoothly.

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. Easy install. And the fact that it is superior gives me comfort and satisfaction. Switching everything over to Amsoil products

For a maintenance nut like me it was only a low stock at the dealer and no aftermarket replacement that lead me to Amsoil. I had no expectations of the miracle in the bottle. Full lockup sooner, lower operating temperatures, smoother and more zippy performance from a Diesel Mercedes Benz!. Yes its true. If anyone's looking for a substitute to the blue gold that they sell at the dealers to do your Transmission service... Try this Red miracle in a bottle. Cost less, works better, easy to get, easy to use and man the difference is like night and day. Grateful Amsoil, I'm sold. Paul- in Calgary 2012 MB W166 Blutec.