69 GT350 transmission fluid

[SChatman]

Recommended Transmission fluid, my car hasn't been running since the days of Type F. I've heard several opinions suggesting Mercon synthetic and people say no Type F.
Thoughts?

[rhjanes]

My local NAPA shows to still have Type-F on the shelf.  I had my C-4 rebuilt about 4 years back.  I asked the rebuilder and they said to use the Type-F or Mercon would also be fine.  I used Type-F from NAPA (Think it was Valvoline)

[SChatman]

I've found type F at the auto parts stores but the Transmission guys are saying the Mercon V is better and NPD sells Motorcraft Type F and Mercon V and charges more for the F. I haven't heard any reasons why one over the other yet, you'd think that rebuilders would be able say why. 
Thanks for your reply

[rhjanes]

Up to you then.  I got to trying to recall my old memory tapes.  I think my tranny guys said the same as yours are!  I might have filled it with Mercon! I'd have to dig to see if I kept a receipt for the fluid.  I know I kept the rebuild receipt.  Anyway, if the tranny guys are saying Mercon V if good then go with it.  They should know the rebuild kit they used would be OK with either fluid.

[KR Convertible]

My local Walmart has type F for $2 something a quart.  The auto parts stores charge $5-7.

[rhjanes]

My local Walmart has type F for $2 something a quart.  The auto parts stores charge $5-7.

Is that the generic stuff?  Yeah, I've used it also.  Got a few quarts of it out in the shop. 

[zray]

The best type F is the synthetic version of B&M Trick Shift

the 2nd best is the conventional B&M Trick Shift


These products are NOT additives, but a stand alone type F fluid.

Z

PS.   The above reccomendations are applicable to the fluid choise in the vintage ball drive Paxton supercharger..  my last Paxton had 75,000 + miles on it with ZERO maintenance other than changing the  synthetic B&M fluid fluid at every oil change. Numerous high speed endurance runs on the course of the Big Bend Open Road Race, 53 miles each way @ maximum rpm 95% of the time.  A fluid cooler was also installed.  If you have a Paxton this is the way to keep it from wearing out. At the time I sold the Paxton, I sent it to Craig C to have it checked out. He reported it had no wear and needed nothing.

[SChatman]

Thanks everyone fo the suggestions. I'm being told by the transmission experts that I've since talked to That say the Mercon V is better then Type F because it's updated with better additives and the synthetic is even better. Thanks again.

[KR Convertible]

My local Walmart has type F for $2 something a quart.  The auto parts stores charge $5-7.

Is that the generic stuff?  Yeah, I've used it also.  Got a few quarts of it out in the shop. 

Yup.  The bottle says Supertech

[FL SAAC]

Thanks everyone fo the suggestions. I'm being told by the transmission experts that I've since talked to That say the Mercon V is better then Type F because it's updated with better additives and the synthetic is even better. Thanks again.

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