Thanks for the info, It makes a lot of sense but now I am at the middle of my break in and now dont know what to do, if change it or just finish it. I think may be I will do a mix of both, I was going to do what I said in the past post but decided to do WOT method at very rich settings , now I have about 10 tanks, what do you suggest I should do? should I just keep with this break in or bring the engine to 200 temps and cycling.