Curious as to what brand (Royal Purple, B&M, Valvoline, Castrol, etc) and type (Dex III or VI, etc) auto tranny fluid most are using and why? Wanting to know for next tranny fluid change. Thanx and GOD Bless, Rob.

 

ive just used the cheap stuff at advanced auto

Keep a good cooler on it, and your will be good.

 

I use valvoline dex 6 with the red lubegard additive. Its the GM recommended fluid and the lubegard provides a little added protection against heat. Thats assuming you're talking specifically about GM, things change with other manufacturers.

 

Parts store brand dec/merc

 

I'm about to put Royal Purple in my new built 60e per recommendation of the builder. He said anything would work but the R.P. would hold up against the heat of my 4k stall best.

 

4l60e- cheap stuff , it will break sooner than it needs a flush , so why spend on the good stuff.

4l80- i still use cheap stuff and change it more often if need be.

 

oreilly brand atf

 

Valvoline DEX 6

 

Orielly special like 2004sss said gonna break sooner than needed changed

 

Haven't changed it out since I bought it.. how long do most people go between doing a tranny flush?