Tim Heilman wrote:
> I know that the '56 Plymouth's Powerflight Auto-Tranny is supposed to use Type
> A fluid. Mine is desperatly low on fluid and I dont recall Pep Boys selling
> Type A. Is there an aftermarket fluid that can be used in conjunction with an
> additive to allow use? Does this hurt the transmission at all? Please help!!!
Car Collector had an article about trans fluid in May. It seems
that Type A fluid is actually its own unique type, of which I have
never seen for sale anywhere, although I believe Paul Holmgren
found somewhere in Illinois at a small garage, and they may make
us up some special.
Type F fluid will give a Type A trans harsher shifts, as it adds more
friction (actually the F is for "friction" not "Ford"). Dexron/Mercon
will give a Type A trans softer shifts, as it reduces friction. The
article claims that neither one will hurt a Type A trans.
So, if you want smoother shifts, use Dexron/Mercon. If you want more
of a performance feel, use Type F. Neither is "correct", but neither
will hurt the trans.
I checked with several rebuilders, including Aamco, and none
have seen Type A for sale in the last 25 years. The general
consensus is that any Dexron/Mercon fluid, with a thingy of
anti-foaming agent (available at any GM parts counter), is the best
substitute for Type A.
-Dave
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