Moparman1539 said:
I just rebuilt my motor on my YZ250. I just started it up, and let it idle for like 10min or so, (like to running temps) then shut it off and let it sit for about 2 hours until it was Completely cooled down and do it again, and let it completely cool down. then just putt around on it for awhile, never going past half throttle for almost a full tank. Then started to ride it like a normally would... well working up to it in little steps. Motor is still working and going strong... Thats what a couple people told to me to do atleast, and seemed to work good.
2 hour cool down isn't really necessary, about 15 or 20 minutes is fine..
I've heard people who do a complete heat cycle, and I've heard of others who just get on and rip.
Both claim to have bikes that have lasted a long time.
I prefer a couple of heat cycles.
As for oil, I prefer Shell Rotella-T 15w40 in my gear boxes (crank case is oiled thru the premix). If you want to spend 11 bucks on a quart, go for it.. but really now, if you change oil often, the 11 bucks per gallon oil is just fine.
I've even let the Rotella-T settle after draining it from the bike and dumping it in my POS Chevy S-10.