What ATF to use in Cruiseomatic?

[Ren]

I don't like automatic transmissions. Never have. Unless I have trouble with my left leg or my right arm. Which almost never happens.
I've known for a long time that one does not simply pour any ATF into any automatic transmission.
I've heard somewhere that older automatic transmissions that have been rebuilt after a certain year have a different friction material in the clutches to make them more compatible with modern fluids.

Here's the facts regarding my situation:

To the best of my ability, I have determined I have a Cruiseomatic.
I have a receipt showing the trans was rebuilt in 2-'94.
The dipstick has been cut and modified so that some information has been removed. It reads as follows:

(information cut away)ON II AUTO TRANS FLUID ONLY 1257013 M.

What ATF should I use?

[HIO Silver]

If a post-80 trans and it has been rebuilt, I suggest Dexron II.

[ThinLizzy13]

Pre 78 or 79 C6's used type F trans fluid. I believe the FMX trans used it as well. That's most likely what your trans uses unless they changed the internals.

[Ren]

Here's more info I should've added to the original post:

According to the numbers on the trans, which I have researched, it is meant to be attached to a '67 with a 352.
As mentioned before, the trans was rebuilt in 1994.

Would ATF labeled Dexron III/Mercon likely be OK?

[sargentrs]

My '64 Fairlane has a Cruise-O-Matic and uses Type F only. If the transmission was rebuilt to the original specs with original style parts, then nothing but Type F.

[Ranchero50]

You can run what you want. Type 'F' was the spec back in the day. WalMart still carries it. I think it has different friction modifiers in it vs the new stuff.

[BobbyFord]

Dexron allows for more clutch pack slippage. Type F is the more "grabby" fluid. You will never notice the difference with a stock truck/stock trans.