Thread: dexron 6 issues in a 2000 GTP

Originally Posted by BillBoost37

Most people report that Dex 6 makes their car shift better etc.

Was there a reason behind the service? Fresh fluid of any sort can cause an issue if there's a prexisting item going on. Did the filter fit snugly up into the collar or was it loose? Is the level when running and warmed up at the top mark on the dipstick?

There are some that have good luck with it, and others that dont

Originally Posted by BillBoost37

Right...and just like a trans flush, I'm going to ask the important questions. Of those that had "bad" luck, how many had a prexisiting issue that fresh fluid wouldn't have helped?

Most of the time, we are going to find that people don't maintain a trans very well. Once it has an issue, they try stuff and have "bad luck" with different fluid, a flush, a service etc etc. Yet the real issue isn't the fluid, but instead it's the lack of maintenance to that point.

I did make sure the collar in there wasn't damaged, but it wasn't a super tight fit by any means, just kind of slid in there with little effort. Could fluid getting past the filter be my problem?

And if I do drop the pan again, what brand of Dex 3 should I use? I have 4 qts of Mobil1 Synthetic dex 3 in my garage, do people have good results with that stuff?

The dex 6 did make the car a lot smoother in general, but I'm just concerned about the longer shifts. I tried to make it do the weird shifts this morning however, and it didn't do it. I removed the battery soon after the fluid change, could the PCM still be adjusting?