franka
Active Member
Currently I run Castrol 20/50 in my oil bag, Spectro 6 in my tranny and HD Formula + in my primary. Question is I read on this forum about using Spectro for gear oil, when I think of gears, I think tranny?
Question is what specifically are the posts referring to when they say "gear oil", tranny or primary?
Question is what specifically are the posts referring to when they say "gear oil", tranny or primary?