Customer Ratings & Reviews

I decided to put this in my g56 transmission due to hard shifting with another brand put in by the previous owner, it now honestly feels like a completely different transmission it shifts as smoothly as a new one .

This product has solved my manual transmission pop outs for my 06 Acura TL, I would definitely buy again

Product arrived faster, and after changing my transmission oil , gears are smoother than ever. Definitely recommended

Les changement de vitesse ce font mieux et en douceur plus tendre aussi

All AmsOil products are Best That You Can Get .This manual Synchromesh Transmission Fluid Its The Best Thing You Can get.

Shipping had within 2 days super product

Changed my trans fluid at 12k with AMSOIL trans fluid and I’m gonna tell u right now you’ll be shifting into gears like butter.

Works great. Put in a k series lsd trans. Feels great and shifts awesome now.

Good helps with worn Synchros on Honda

This oil is great for manual transmission honda civic type r The shifts are butter smooth and works great in both hot and cold climates Since I switched from OEM trans fluid to this I am never going back

I received a 2001 Wrangler that is special to my family. After years of neglect it was shifting hard and extremely noisy. I figure the NV3550 MT was toast, but decided to try a fresh Amsoil change. I’m absolutely amazed at how solid the transmission now feels. First and second gear rattles disappeared and the transmission is now shockingly smooth through all 5 gears. All mechanical equipment has a lifespan, but I feel like there’s new life in this transmission. While it may not solve problems for everyone, I highly recommend this product for the transmission models specified by Amsoil.

This is second time I replaced the manual transmission fluid in my 2018 Honda Civic. The first was actually at the dealership with what I assume is the factory oil. The transmission wasn't shifting as smooth as when I bought the car but I kept driving it until it needed to be replaced again. This time, I replaced it myself with AMSOIL 5W-30 Manual Synchromesh Transmission Fluid and got back the smoothness I was missing when it was new.

I've used this 5w30 for the last 240,000 miles on my 2008 Civic 6spd. Changed around every 60,000 miles. The transmission still shifts like butter.

I changed the transmission fluid in a new to me car because I didn’t know when it was last changed or ever at all. The car shifted great and the old fluid came out clean but, after changing the oil with Amsoil Synchromesh the car shifts and feels even better!

This stuff really works well . Quiet smooth shifts

Excellent lubricant for the ZF6 in my 1995 Corvette.

Amsoil puts out great products! The fluids are made of top-quality ingredients.

2nd and 3rd gear synchros felt like they were failing on the old fluid, but after using this stuff it cleaned up the synchros behavior immediately. Would recommend for anybody who needs synchromesh fluid - especially in a Honda that requires it

Bought this for my 06 RSX that was popping out of 3rd gear. Other owners recommended it and it worked like they said it would, smoother shifting and no popping out of gear!

Excellent products always.