Royal Purple 06320-6PK Max ATF High Performance Synthetic Automatic Transmission Fluid - 1 qt. (Case of 6)

I was constantly having poor shifting and miss shifts with 09 4x4 GMC Sierra. Replaced the Dexi with this fluid and was amazed within two weeks it removed a thunk I had on second to third gear shift since new. No more missed or late shifts. I highly recommend this fluid and all Royal Purple lubricants which I use in the entire truck.

I did a partial transmission fluid change using Royal Purple Max ATF on my 2011 WK2 with a 3.6 liter Pentastar engine and the 5-speed transmission. My Jeep has well over 230,000 miles. Since it's cold in Michigan and I wasn't interested in staying outside too long, I used a suction tool to remove the fluid in the transmission pan, which was equal to around 3.75 quarts of fluid. I then replaced that with 3 quarts of Royal Purple Max ATF, 1 bottle of Lucas Transmission Fix, and 1 shot of Tribotex Transmission treatment. I couldn't be happier with the results. Not only has the slip been eliminated, but the vibrations that used to be part of every acceleration were dampened down to almost nothing. (The old 5 speeds that were in Grand Cherokees of the WK2 series had a tendency to vibrate under light acceleration.) I find that the potholes create more noise the transmission does. I also noted that the transmission temperatures are consistently lower than before - they rarely exceed 170 degrees Fahrenheit. It's been around 2 weeks since the fluid change, and there were plenty of spirited test-drives. I say this was a successful partial-fluid change. I'd certainly know if it weren't. I attribute these results to Royal Purple's Max ATF. But I also credit TriboTex for its restorative properties, and Lucas Transmission Fix for just being another fine Lucas product. All in all, I highly recommend Royal Purple Max ATF. I also recommend the other products mentioned in this review.

Es el mejor aceite para la transmisión

So good👍

Used this to bring new life to a 2003 Mitsubishi eclipse auto (117xxx miles) that had been sitting for about a year, project ongoing... This thing was suffering from some serious grandpa syndrome, and a bad case of neglect. Shifting was rough and some gears would not fully engage with clutches slipping, I thought this transmission would need an immediate rebuild. I figured $60 is worth a try over a $1500 rebuild. Did a hot drain-and-fill with the case of 6 quarts, and the old fluid looked like coffee. The first test drive showed immediate results even in the parking lot, shifting into reverse just glided into gear, at first I thought it didn't engage. The test drive yielded smooth shifting, and 300 miles later it keeps getting better. Sport mode chirped the original tires from first to second, and every shift over half throttle is a quick responsive positive pull. It still needs time to work in, and I have another drain-and-fill planned at 500 miles to make it just over 80% new fluid, but I'll wait for the top-notch detergents to clean more garbage out before the drop. I also used RP 5w-30HMX (high mileage) and RP's oil filter for the engine, it runs smoother and quieter, and now I can hear valve lash out of adjustment, which is a good sign you're running a good oil, easy fix when I replace the valve cover gasket. UPDATE: FEB 2017 Car is at 138,000 miles and still haven't done the second drain and fill, transmission still shifts better than some new cars. I did however start using RP's filter and 5w-30 HMX in the engine and picked up 3-4mpg overall, and freed a stuck lifter. Car is still going strong according to a friend I just sold it to.