Quote:

so the mercon 3 is not a good fluid for are trannies. i have a stock trans and have been wondering if this was the right fluid.



I don't think that has been said here.

It has only been said that there is better stuff, and there is.

Dextron3/mercon3 FAR exceeds any of the original specs a torqueflite would have had, and is PERFECTLY acceptable in a drag or street car.

Given the choices of fluids at a modern parts store, the correct fluid for a torqueflite is Dextron3/mercon3.