Forgive me if this is too long just want to do everything right with the first Harley. From what I have read this is the way I understand it to be best. I'll be riding an Ultra. Engine: Mobil 1 v/twin 20/50 synthetic Transmission: Golden Spectro heavy duty 6 speed 75/140 Primary: HD formula + Break in: 3rd gear accelerate to 60 and back to 30 10 times. One question I have is that the link to MOTOTUNE - USA says to change the oil after 20 miles where I think you said 100 miles Glider and they also said not to use synthetic for the first 1500 miles. So should I or Shouldn't I switch to synthetic right away? Ok I guess that was more than one question. Oh and should I change all 3 oils after break in. I had planned on Changing all the 3 at either 20 or 100 miles which ever seems best and then at 1000 miles and every 3000 to 5000 depending on the riding miles. Thanks everyone for the help.