Red Line 30504 D4 Synthetic Automatic Transmission Fluid (ATF) - 1 Quart

Great product! Super fast shipping. Fixed my C7 Corvette’s second gear issue. All shifts go in smoothly now.

What can I say? I have nothing but praise for this stuff. I bought my 2004 Acura TL in August and really haven't been able to enjoy it since then because a week after my purchase, I was told by a small shop that my transmission was on its way out. I've been babying the car since then, and keeping my fingers crossed during the several 250 mile trips I've made to my hometown. I didn't have many symptoms, except the occasional chatter, RPM fluctuation, etc. I narrowed it down to the torque converter, then did some research. After replacing the 3rd and 4th gear pressure switches and noticing a little difference, I decided to do more research. Then I heard about this stuff... Oh man, was it ever worth the $130 investment! I first got the car jacked up, and loosened the drain. I'm not kidding, I don't think my fluid has been changed in the 107,000 miles on the car. It was pretty dark, and although there was no "sludge," I wasn't happy with the consistency of the old fluid. I spent a couple hours doing the 3x3 fluid change. First of all, it's a comforting feeling knowing I've got clean, fresh, red fluid in there. Secondly, HOLY CRAP! The car drives like it's brand new! No more "gear guessing" or chatter or anything! Shifts are smooth, clean, crisp, etc. I didn't realize how sloppy the shifts had become until I replaced the fluid with this stuff. If you're even contemplating trying this stuff out, DO IT! Thank you, Red Line, for allowing me to begin enjoying my dream car!!!

Excellent Product! I use it in my C7 Corvette Z06 and Subaru Forester. Makes my transmission shift like butter. Red Line is all I use; and I’ve tried them all.

Good product

Got Redline D4 for my 04 Honda Accord w Auto trans. Did some extensive reading about product on various forums and what not prior to deciding to give it a shot. I'm a big fan of Hondas, but if you're looking at this stuff for your Honda you already know all about the transmission issues. And you probably already know that most people tell you to only use z1 or the new dw1 fluid from Honda. I had a 2000 accord prior to this one, bought it used and did the trans drain and fill 3 times w dw1- 5k miles later I had trans issues. Maybe the fluid, maybe not. Car had 190k. My 04 has 130k and I just purchased it used. When I initially drove it I didn't notice anything with the transmission, but the more I drove it I started to notice a bit of a long shift from first to second, and a bit of gear searching from time to time in the city. I knew the fluid was a little dirty and my first step when I buy a used car is to change oil, trans fluid, diff fluids, power steering, etc. so that tells you a little about my maintenance habits w vehicles and my attention to detail. I only use Mobil 1 synthetics religiously but their ATF Fluid wasn't necessarily "recommended". So I decided to give this Redline a shot. I must say, I haven't driven many miles yet (500 or so) since the change, so time may change my mind. However, with how auto trans work you can usually tell almost instantly if you have a fluid that isn't compatible with your car. Slipping, weird shifting, etc. I am really pleased with the results of the Redline ATF though. I immediately notice little to no gear searching, and the 1-2 shift is much better. Overall the shifts are still smooth when I'm just taking my time, and very quick and precise if I'm giving a little more gas. Granted my fluid was ready for a change, but I think the Redline improved my cars shifting more than new Honda fluid would have. I've seen both results in different cars. I did a 4 x drain and fill using 12 qts of Redline to get as much old out as I could. My advice, forget Honda fluid and buy this Redline. It's a much better fluid. It's synthetic. It works great, and seems to be completely compatible with Honda's fragile transmissions. In my opinion it's the best precaution you can possibly take. I'm really pleased with the results. As I said before, time could change my opinion but I don't expect it to. Synthetic fluids run cooler, don't break down as easily or as quickly, last longer, etc. I plan to drain 3 quarts and fill at every 5k oil change. Overkill? Maybe. But if you own a Honda and are looking at Redline fluid you know why I'm taking the extra precaution.

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

Matches 955 Cayenne transfer case fluid specs.

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

Great for my Hurth gearboxes on my boat.

Works well with my 1998 Toyota Corolla VE which requires Dexron II or III. This covers both since it is a Dexron IV Transmission Fluid. I notice my car so far is less jerky when shifting into reverse.