I've talked to 6 different people, and got 6 different ansers, but all agree not to let it idle at all. I ate two lobes off my cam, and killed a new set of lifters. What rpm should I run it at, and for how long???? I've herd 3500 for an hour, or 1800 for a half an hour, let it cool down and go again. How do the gurus do it on here??? Im going to put the motor in without the d-shaft so it wont kill the pump in the driveway. Im running rotella t 15w40 with a zink additive NOW. Befor just the rotella t, and no additive. Any info would be helpful.