It seems we all have our opinions based on personal experience just like with engine oil & filters or spark plugs.
When I bought my GN, it's 2004R had just been rebuilt (due to an improperly adjusted tv cable). The builder added a TransGo shift kit and filled it with Type F
.
Soon after I replaced the lockup solenoid with a 700R4 piece, added a cooler and refilled it with Dextron III as everyone on the board said to get rid of the F in a BRF trans with a D5.
I realize the dino Type F is old school although some claim success with it in lockup converters also.
I've had no trans problems in 14 years except for overheating the fluid and blowing out the front seal 4 or 5 years ago due to the trans cooler line coming in contact with the downpipe.
My plan for the car is to weekend race it, driving to the local track with a TH350 (this builder recommended Type F also) and a nos 2800 stall Chevy Vega converter.
The trans/converter package had proved great on the street behind a mild SBC so I added a B&M shift kit to firm things up. Incidentally B&M recommends using their Trick Shift fluid or Type F.
I plan on sticking with genuine Ford F as that's the only fluid the trans and converter have seen. I may change to the ATI Super F synthetic for longevity (and a few hundredths on the time slip
) if things go well.
Thank you all for your input and experiences, keep them coming!