Very true. My 400 has 42k and runs better and faster than ever. But it is a very gradual thing. Not like one day its not there one day and the next it is.Oh, the difference is there, trust me. After some accrued mileage i can do 90 mph stretches ind. quite easily. Before that, going at such speeds would have prob knocked all my teeth out.
At 1000 miles, my clutch started to judder and the bike would shake a bit when moving from rest. I read that this problem is from the clutch shoes having developed a glaze. SO I did a powerbrake, and this burned off the glaze, exposing a fresh layer of clutch mat'l. Shudder went away.What might I feel (and when) as the miles are put on ?... I've been careful to vary the speed & vary the load.
I didn't keep track of the quantities but, until I had over 10K miles on my '09 400, I used enough oil on Interstate runs that I had to keep a close eye on it. Besides adding oil, I also had to suck oil out of the breather box from the blow-by.I don't believe the later model 400s have the oil consumption problem, do they?