rickou812

iTrader: (10)

I tried the search...lol and read the stickies and did not see an answer.

I'm installing a braked th350 and was wondering what is the recommended fluid.
I have heard to use F- atf , tractor trans hydraulic oil, and some say stick with dexron...
So what is the best and most economical?

cjg454ss

iTrader: (27)

ive always run advance auto(valvoline) fluid in my th400, i jusst bought the 5 gal pail of tractor fluid. it was 48 bucks and has plenty left over. just dont sit on the brake for long periods of time and youll be all set.

Randy WS6

iTrader: (69)

I run Castrol, none synthetic type-F in my braked 4L80 FMVB.

lt170chevelle

iTrader: (2)

yeah ive asked this question before with next to no answers.I have always heard type f is better because of the friction coefficiant in or something of that nature but i dont know what the viscosity or thermal breakdown point is on the type f or dexron.

WE TODD DID

iTrader: (2)

Type F

Greaseymec

iTrader: (9)

I run type F in my 4L60E. Teardowns seem to show a bit of bushing wear over Dex III but the shift seems much better.

Mec