Reduces Transmission Wear By Reducing Metal To Metal Friction Reduces Transmission Fluid Temperature Up To 57 Degrees Dramatically Improves Shifting Works With All Automatic Transmissions Works With 1997-04 6-Speeds Pro Blend Tans Cool has developed the best transmission fluid additive for automatic transmission fluid on the market. By reducing friction, on the gears, bearings and the shafts it doubles the life of a transmission, plus fluid temperatures are reduced and shifting is smoother in hot or cold conditions. It’s a must for hi-performance driving. Learn More

Specifically designed to work with Porsche® transmission and limited slips, and proven in millions of road and track miles, Swepco gets our recommendation. In fact, you won't need any additives because this lube has it all, including a new improvement, Lubium that forms a protective film. 1 Gallon Learn More

A satisfied customer of ours Dexter Ford says, this stuff is amazing. Before I poured it into my vehicle, I was afraid I was right on the edge of a trans rebuild. The trans gave me a lot of resistance going into each gear, making shifts slow and hesitant. And the syncros were getting a bit sloppy. It was easy to beat them and get a grind out of the box, specially upshifting into second or third. Red Line claims that the fluid creates added grip between the syncro rings, to help even worn syncros get the gears up to speed quickly during a shift. And boy does it work. My turbo now shifts much more quickly and crisply, with less effort and better accuracy. The difference was truly dramatic my first drive after the fluid change gave me an ear-to ear grin. Ill never run a stick shift without it. Learn More