What is the best auto tranny fluid?

**BANDITO** · 10-14-2009, 04:30 PM

I just got a performabuilt tranny and I need to know whats the best brand fluid I can use?

**98Hardtop** · 10-15-2009, 04:34 AM

Did you ask them on what they recommend you use?

**BANDITO** · 10-15-2009, 03:50 PM

No but I think dex3 might be better than the royal purple stuff

***Ed Blown Vert*** · 10-15-2009, 04:22 PM

I use regular tranny fluid. Nothing special. A transmission cooler is more important.

**Cutlass** · 10-16-2009, 03:00 PM

Dexron III

**camaroz98** · 10-16-2009, 03:12 PM

i use the new syn. dex 6 i believe it is in my 700r trans. made the shifts really smooth love it!

Dexron-VI -- Introduced in 2006 for GM Hydra-Matic 6L80 6-speed rear-wheel-drive transmissions. Dexron VI now replaces Dexron III and II, and can be used in GM or import transmissions that formerly specified Dexron III or II.

**BANDITO** · 10-16-2009, 06:40 PM

Who makes it? and how much?

**thearborbarber** · 10-17-2009, 10:29 AM

All the major oil makers produce it. I can find valvoline in my area pretty easy for $5 a quarts.

**02transamce** · 11-01-2009, 09:04 PM

i changed the tranny fluid/filter in the monte carlo ss and installed the castrol dexron VI, $6.95 a quart,but the trans shifts are definately smoother. side note:my owners manual called for dexron III with H specification, and the castrol dex VI was the only thing advance auto parts had that had a H specification. what is the deal with the H specification?