6-Quart Pack of Royal Purple 01512 Synchromax Manual Transmission Fluid

Steve: Great item

United States on Nov 21, 2023

Jan: 1998 BMW Z3 I Replaced the transmission fluid in my manual transmission 5 speed . Wow what a difference. BMW says lifetime fluid. Yeah hello. Shifting a lot smoother I didn’t have any problems before. Just figured I’d change it because I have 158,000 miles.. but what a difference it shifts great. It feels like I don’t hear the sound of my transmission. So I guess it was this great fluid that made a difference.

United States on Jun 25, 2023

SkyJumperZach: If you're like me and love your car more than you love most people, then you'll want to treat it to the Royal Purple-ROY01512 ROYAL PURPLE SYNCHROMAX QT. TRANSFLUID. This stuff is a game-changer!

I was hesitant to try this transmission fluid at first because I thought my old stuff was doing just fine. But boy, was I wrong! The Royal Purple-ROY01512 ROYAL PURPLE SYNCHROMAX QT. TRANSFLUID has taken my vehicle's performance to the next level. It's like giving your car a big hug and telling it everything will be okay.

Shifting gears has never been smoother, and my fuel economy has improved since using this product. Plus, it's a synthetic product, which means it's more durable and longer-lasting than your ex's attention span.

The 1-quart bottle is easy to use, and it's compatible with most manual transmissions. The only downside is that it doesn't come with a built-in unicorn horn or a miniature disco ball, but I guess you can't have it all.

Overall, I highly recommend the Royal Purple-ROY01512 ROYAL PURPLE SYNCHROMAX QT. TRANSFLUID to any car enthusiast or anyone who wants to protect their transmission and make their driving experience a little bit...

United States on Apr 20, 2023

Peter Thomas: This is good stuff. It made my gearbox far less 'notchy' and just generally slicker to use than the manufacturer's official fluid.

United Kingdom on May 08, 2022

Mark: very pleased

Canada on Apr 06, 2022

Matteo: Perfect for the 2014 Honda Civic Si

Canada on Apr 05, 2022

Steve levesque: Pour ma transmission de fiesta 2013 parfait

Canada on Feb 04, 2021

Justin: Arrived next day, extremely well packaged. Each bottle came sealed in its own bag, inside another bag, inside bubble wrap. No damage, no mess and with Royal Purple you really can't go wrong.

Canada on Jan 29, 2020

Toolbox: Got this to replace the MTX fluid in my 1998 Contour SVT, which I'm sure was still running the original fluid. The tranny felt like the former owner got a little too happy with the power shifts into 2nd--the synchro was really feeling like it was going to need replacement...something I really didn't want to tackle this year. Figured changing the fluid probably wouldn't help, but it was way over due anyway so I figured I'd just go ahead and do it. I did a quick search to see what type of fluid to use in it, and I kept seeing people recommend this... Now, I've been wrenching for more than 20 years, and I'm HIGHLY skeptical of anything that smells like "rebuild in a can", but I also try to keep an open mind...and frankly there were so many people recommending this I thought it was at least worth a try. Even if it didn't help at all, I figured it was probably no worse than the factory stuff. Had to be better than the almost 20 year old stuff in the car anyway lol.

Anyway, I did a quick drain a replace, and took it out for a test drive. Frankly I was shocked at the difference...the improvement was immediate and very noticeable. The car shifted MUCH smoother, and I was very...

United States on Sep 16, 2015

AKO California: I replaced the manual transmission fluid and differential oil in my 1998 BMW 323is, both of which hadn't been changed in at least 100,000 miles. This fluid in the transmission and RP Max Gear 75W-90 in the differential. I expected some improvement, but it runs much quieter and smoother than I thought it could. Sometimes it is like I nudge the shift and it sucks it into the gear I want. Really surprising how smooth it is. And my car is quieter even though I never thought it was noisy before. Now the main sound is the engine when accelerating and if I'm at cruising speed I just notice the quiet.

Having said that, I should note that the existing transmission fluid was black and only about 1/4 to 1/3 full. There was some form of slow leak since the transmission was caked with dirt and oil yet I never had stains where I park my car. So I'm comparing to what was an obviously under-filled transmission with old fluid. The first 50 miles or so after replacing the oil the shifting was notchy and terrible and I was thinking I'd have to put something else in. I was also worried I'd fried it due to low fluid. But then one day it shifted smoother, and the next even smoother, until it was...

United States on Mar 17, 2012