Re: 51 transmission fluid

Posted by Owen_Dyneto On 2008/7/24 22:34:08

The original fluid was known as Type A, used by Packard and others but it's no longer available. The closest modern fluid to Type A is Type F (readily available), followed by Type FA (also quite common). You'll find some folks who say they switched from Dexron/Mercon to Type F and noticed considerable improvement (I'm one of them), yet you'll find others who have found Dexron/Mercon more suitable. I'm not convinced its a critical decision unless you have clutch groan on shift into direct drive with Dexron, in which case I'd strongly suggest you go to F or FA.