Crap! I just Filled My New 4-Speed with Valvoline 75W-90 Gear Oil...
It say's it's for a Non-Synchronized Trans? What will I do now?? Drain it before I spin it?
or Send It and see what it does?
Mine ended up having the Dreaded 3rd Gear Crunch (sometimes on a SpeedShift)
and it sometimes Sticks in 1st...
Should I drain 1/2 of the 80/90 and try the Synchromesh? Or Drain it All and Switch?