Originally posted by steve-o:
Demon: I've read before, and I think it was your posts, to use conventional oil instead of synthetic on a worn tranny. Could you explain this a little? Why is it better to not use synthetic?


Synthentic is to "slick" to let the damaged syncros "bite" properly.

Conventional fluid by nature is more viscous. Hence why it has more parasitic drag then a comparable weight synthetic fluid.

The ATF+3 (or +4) already has extra friction modifiers in the fluid.


"Technically" synthetic fluid could still be used if enough FM was added. There just is always that point of what is enough and what is too much...

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.