80W 90 if using conventional. If using synthetic, 20W 50 will work. Also harley has Formula +.
You can use the same oil that you use in your motor
It uses a special blend Tranny/primary lube.
Usually it's called transmission oil. For example I use red line transmission oil in both my motorcycles(Harley,Ducati)
20-50w
Knowing the year would help answer this better.
NO
no...but you can use screaming eagle synthetic oil in both the motor and the transmission which is supposed to be better anyways
yes-absolutely.
should be 20-50 wt harley oil but check with your dealer first..
80/90 semisynthetic hypoid gear oil is what the factory put in it but I use Red Line Heavy ShockProof fully synthetic gear oil. Not cheap but neither was your Harley.
HD recommends 20w50 in all three holes. oil, tranny, and primary.
You should only use Harley transmission fluid from the dealership. It's engineered by Harley for their transmissions.