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ATF for Dynaflow transmissions.


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11 hours ago, Airy Cat said:

My mechanic said that Valvoline Maxlife ATF Full Synthetic would work well in my 1954 1955 and 1956 Dynaflow transmissions.

What do you think about this?

Any fluid would "work" in  dynaflow due to the simplicity with no gear changes.  But all modern fluids and especially the synthetics are lower viscosity than original fluids.  If yours has marginal pressures or small leaks, you may have problems.  You don't need a premium fluid in a dynaflow...something like WalMart dexron/mercon will work fine.

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2 hours ago, old-tank said:

Any fluid would "work" in  dynaflow due to the simplicity with no gear changes.  But all modern fluids and especially the synthetics are lower viscosity than original fluids.  If yours has marginal pressures or small leaks, you may have problems.  You don't need a premium fluid in a dynaflow...something like WalMart dexron/mercon will work fine.

 

In my readings of trans fluids over this past week, Supertech Transmission Fluid was rated quite highly.  Found at Walmart.    

Edited by avgwarhawk (see edit history)
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