I'd Chime in here to ask IF you have the Operators Manual that comes with the bike? If so LOOK in it as IT does give a lot of NEED to Know Information..
MOST of the easy stuff that HD charges a Arm and Leg for is Answered or Shown in the Book.
Change intervals and quantities are there.. AND PICTURES with words showing Where the different places are on Your Bike... Can't beat that..
As far as OILS and LUBES and GEAR OILS go READ and You decide OR go with MY recommendations:
Engine 20/50 Full synthetic oil..... Redline, Mobil-1 V-Twin Both good choices
Primary, Wet clutch approved...... Formal+ by HD or MTL/V-twin primary by redline, Spectro primary are good choices
Tranny GEAR OIL.... Redline Shockproof Heavy is MY choice .. Spectro another
READ your Book.....
signed....BUBBIE