S
sportrider
the initial brake in period is the time when all the hard parts in the motor are getting polished, the purpose of fluctuating RPMs is to keep any one part from overheating or scoring. I've heard that by changing to a full synthetic oil you can actually slow down the break in process. but I sincerely doubt that this had any effect on your break down. If your motor did have a major catastrophic breakdown I would lean more to a defective part then anything your oil change did.Geez...well now that we're down to the gritty details, I sometimes think its the oil I used in the bike. I used the Rotella synthetic and I was just told that synthetic shouldnt be used for at least 4000 miles. I wonder if that would have something to do with it....YIKES! This is beginning to look worse and worse.....