Red Line D4 ATF (Dex/Merc) 32 oz (946ml) Quart Bottle for Automatic Transmissions, Passenger Cars & Light Trucks

Matches 955 Cayenne transfer case fluid specs.

Great for my Hurth gearboxes on my boat.

Très bon produit, j'utilise ce produit exclusivement pour ma Corvette C6 depuis longtemps !

Ich bin begeistert was der getriebeöl redline d4 atf leistet. Die Schalt Vorgänge sind deutlich weicher und sanfter geworden demnächst werden ich komplette öl Wechsel vornehmen. Tolle Arbeit an die amerikanische öl Industrie

This is by far the best thing you can do for a 4l60e, 700r4, 4l65e, 4l80e. It just works wonders with the standard in truck transmissions. I was seriously about to go have the tranny rebuilt. I’ve had 3 rebuilt all around the 175k-200k mark. My Tahoe was banging into 2nd and not pulling great in 3-4. Changed filter(every 50k miles for my trucks) and emptied through radiator. Refilled with redline d4 and drove it. Banged into 2nd 1 last time on the test drive and I tell you it now shifts like new. I have a rebuilt tranny in 2 other 4l60’s (1 with about 400k on truck, 125k on trans) and I emptied both and added the redline. I don’t normally write these long winding reviews but this stuff is awesome. Trans runs 20 degrees cooler on stock cooler, shifts like a dream, pulls like it was new. I know it’ll eventually run out of clutch material but I’ll be danged if I didn’t see a huge improvement from the jump. Didn’t have to join some club to buy it either.

Good product. Used it in a 2003 corvette z06 6 speed t56 transmission with great success.

I read reviews elsewhere that this stuff smooths the shifts so I tried it. I recently acquired an old classic car with auto trans. It’s known to shift more abruptly than a modern car. After changing to this stuff, the shifts were noticeably smoother right away. Really works.