Thread: Mobil 1 Synthetic ATF vs Dex VI vs ZZP (4T65E)

Okay, Ive been searching around on this forum and others to get an idea what is best and want your opinions and see what others have used.

I want to drop the pan & replace the filter and am leaning towards the M1 full synthetic. (Not the multi-vehicle) Supposedly it's M1's best fluid. But there is a lot of discussion about Dex VI and M1's is a synthethic blend.

I was going to get a shift kit from ZZP, but have read that the one from Intense is much better, so I'll probably wait until the next change.

The car is an 00 GT with the 4T65E.

While you're at it, what filter would you suggest? I was thinking a WIX, but am open to amy suggestions.

TIA

Honestly I just run the autozone filters. I'm in the transmission often enough and I replace the filter when I'm in there every time. I'd go with the Dex 6

Thanks. Any particular reason for the Dex6? I'm just curious and trying to learn, so if you could expand on your thoughts about it, it'd be good.

Okay, thanks. Yeah, I read somewhere that it had DexIII, which makes sense as it's 10 yrs old. So you'd stick with Dex6 over the full synthetic, too? I like that better, pricewise.

It sounds like the full synthetic is (or was) considered DexIII but it's not as clear from the website, etc.

Thanks for the help! I've got to do this in a week or so, that & plugs, maybe wires....depends on funds, which seem to be missing lately.

Thanks for the sound advice. I need all of that that I can get. LOL

Dex 6 is factory rated for your transmission...who would know whats best than the people who engineered your car. I believe if I'm not mistaken that the DEX line is full synthetic

Wow, this site kicks ass. Thanks for keeping me straight, lots of good ideas. I've got some reading to do!



So, no takers on full synthetic Mobil 1 ATF? Just curious. Dex6 syn blend is way out in front, so unless others chime in, that's what it'll be.

Speaking of reading, one of my buddies from the ME4X4.org club has an Impala SS, late model, and suggested I do a tune from these guys. Seems like a good price. Thoughts?

PCMforless.com

Originally Posted by gtpinsc

get a transgo shift kit from here Triple Edge Performance - Home Page

Get this shift kit.

But a proper tune helps more with how these trannys shift.

Run Dex VI, its more than good enough.

Thanks Matt, will do!

Good to know. I guess I've got some research to do before I buy, which is a good thing, because the wallet is light.