For the engine oil, I run total 5w40. It is a synthetic oil, that still has zinc in it. When I first picked up my 80q the ng had some lifter tap, after changing over to this oil, and running it through 1 oil change, the lifter tap was almost gone.
As for the trans oil, I have been told to run either motol, or redline, 75w90 gear oil. But make sure its the correct GL rating. I think its supposed to be GL4(safe for brass and bronze). You might want to double check that though.