Re: advice on ultramatic for 1952

Posted by fredkanter On 2017/1/24 23:07:58

The two fluids are totally and completely compatible, if you mix or switch the seals will not leak, the trans will still work and you probably can't tell the difference when driving. Yes, supposedly one shifts crisper than the other but the 50-54 does not shift , there's only direct drive engagement and it is often almost imperceptible

Bottles of them do not have warnings, car manufacturers do not have warnings or void warranties if fluids are mixed.

Add fluid and just enjoy the drive.