I just rolled over 2K (of my riding) this last week since the purchase of my '05 and changed all three after some advice (& help) here. The dealer said it was all serviced after the bike was traded in, but I just felt better knowing for sure. The current odometer is near ~33K so I will change hte engine oil again around the time it rolls around to 36K and check to see how it looks. If it is OK, I will start regular changes for all at 5K intervals.

 

...and the winner IS?...Dustball....he has it about right...too many change oil WAY too often .ya I know.."doesn't hurt"..yada, yada.....I used to work with a guy who used synth in his car and would change oil every 3K..WTF? why pay for syn?...HD says 5K on engine oil..so you know 6K is fine....primary and tranny can go 10K no problem...