What is everyone running in their Boy TRANSMISSIONS.. My Muncie re-builder says to run reg Dino oil...is that ok?   should I look at  artificial DYNO fluids?CARL 2

carl 2,
i'm using 75w90 synthetic in my m20.
dave.

quaker state?   is it smooth?  did you run conv, before?

yep, quaker state. believe the trans had conv. in it when i got it.
dave.

many sites say use only conv. oil  I wonder why?