Which tranny fluid

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Oct 3, 2013 | 04:26 PM

johnsjsj

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Which tranny fluid

I recently purchased a 1956 F100 that I am restoring from the ground up. It has a rebuilt 1963 -- 390 FE motor and C-6 tranny (with a new convertor of course). Need to know what is the best fluid to run in the tranny and the amount total. Also if Synthetic will work. Please let me know what everyone is running.

Thanks

Oct 3, 2013 | 11:15 PM

52 Merc

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From: Burbank, WA

C6 trans uses Type F atf, unless the clutches in the rebuild kit call for a different spec.

Oct 3, 2013 | 11:48 PM

old_dan

Fleet Mechanic

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From: Morgan Hill, CA

Wayne,

I think C6's use dex/merc. The type F was for earlier units up to the C4. It may depend on the year model. My C6 is out of a 1989 F150....I'm running the Dexron III-Mercon fluid.

Dan

Oct 4, 2013 | 03:18 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

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From: Simi Valley, CA

Quote:

Originally Posted by old_dan

Wayne,

I think C6's use dex/merc. The type F was for earlier units up to the C4. It may depend on the year model. My C6 is out of a 1989 F150....I'm running the Dexron III-Mercon fluid.

C6: 1966/76: Type F / 1977/97: Mercon aka Dextron II.

C4: 1964/76: Type F / 1977/81: Mercon aka Dextron II.

On sale day 352/360's magically become 390's!

1963 390 Ford/Thunderbird/Mercury Passenger Cars would have come with MX Cruise-O-Matic (14 trans pan bolt holes).

C6 introduced in 1966 FoMoCo Passenger Cars & 1968 F100/350 w/360/390, which was also the first year for these engines in F100/350's.

1965/67 F100/350 w/352's came with MX Cruise-O-Matic (Type F).

Mar 23, 2014 | 04:39 PM