Well I rec'd my copy of Fix My Hog, Toruing Edition and I think I'm ready to tackle some of the more simple wrenching on my Ultra. Use to change the oils on my Wing all the time. How does this sound for my lubs. 1. Trans: Spectro 75w40 or Mobil 1 gear oil 75/140. 2. Eng: M1 V Twin 20/50 3. Primary: Formula + 10-30 or 10-40 without friction modifiers. Is this a good enough combination of Lubs ? I took most of the information Glider posted. I feel I couldn't go wrong.