About a year after purchasing my ZDD I started to have trouble engaging first gear even while completely stopped. So with <70k on the drivetrain I added redline MT-90 and heavy sp (1/2qt). First gear engagement is now smooth even on those frigid 45 degree FL mornings. I ran this lube combo in my conquest tsi for years (same 5spd as 80's zx). No complaints with 150k+ w/ fidanza and rps. For you, light weight was probably best. btw how much did you add?