Re: tranny fluid ?

Posted by Owen_Dyneto On 2009/5/12 15:10:30

Though they may or may not all be red, there were distinct differences in the additives in the various fluids. With additives in Dexron to allow clutches to slip a bit for a smoother engagement, it's quite contradictory in requirements for an Ultramatic, though obviously some folks have had satisfactory experiences with it.

I believe that 69, 70 or 71 was the last year for the whale oil-based fluids. I've heard that a rash of transmission failures for GM followed the conversion.

I've heard that Hudsonite fluid also contains rosin. Can't verify that but you can still buy the original formula from HET Club.