SAE 75W80 API GL-4 Manual Transmission and Transaxle Lubricant - Red Line (50204)

M: This fluid is worth the hype. I have a 2001 Wrangler TJ that would grind pretty badly through 1st - 3rd gears. After I did a complete flush of the old fluid, this quickly quietened down my noisy transmission, and shifts so much smoother now. This is one of the few products that actually lived up to all the hype. I did try Royal Purple gear oil before this product and I can tell you this, do not waste your money on that junk, try this instead.

United States on Oct 13, 2023

Bbb: 95 F150 xl
Yep it was previously notchy and hard to get in 1st until a full stop. Now it shifts like fresh warm butter into every gear.

United States on Sep 15, 2023

G. Wayne: 2004 Jeep Wrangler TJ 4.0L was grinding from 1st into 2nd. Was afraid it was the syncros but thought I'd give a fresh gear oil change first. This solved the issue right away and the Jeep shifts so smoothly now, I can't even believe it. I used a little less than three bottles. The fill hole is on the side of the transmission, so get a fluid pump with a hose to pump it in to make your life easier. Great product.

United States on Jul 26, 2023

Brad: On time, as described.

United States on Jun 28, 2023

Marcus Gustafsson: Great products, great seller. Only let down was the shipping company (Schenker) that added a few unnecessary days without communication.

Sweden on May 25, 2023

Lisa Stevens: I have an '09 Mini factory John Cooper Works with a 6 speed manual transmission. Was notch and 5th gear was rough.
Few weeks in, shifting better, after a month, shifts so smooth, 5th gear included......
Going in to my wife's BMW Z3 3.0 roadster...NOW!!!!

United States on May 21, 2023

Mathieu L.: Parfait pour une transmission manuelle honda shift tout en douceur. Va très bien avec le LSD de civic si.

Canada on Nov 19, 2021

Naimer: Shipped within a few days which was great because I couldn't find this oil locally. thanks !

Canada on Jun 15, 2021

Isaiah: 1989 BMW E30 325iC. Works great as a 50/50 mix with MT-90 in my car — Made cold weather shifting a lot easier, especially in 2nd gear (although double clutching helped the best). I definitely would recommend this for use in older cars that have brass synchronizer rings in their gearboxes.

Canada on Nov 07, 2019

Zero_gravity: Used in my manual transmission 2015 Mazda 3. I was unable to get this gear oil weight locally. This oil is formulated for manual transmissions (GL-4) and not some mupti-purpose crap. Little more expensive but you really do get what you pay for here.

My transmission shifts smoother, gear engagements are far easier. There's a reason people swar by this stuff.

Shipping was fast and accurate.

Canada on Jul 02, 2018