I think there's a wide variety of types of motors on this post. Like most things the more power or rpm's the more preventative maintenance. Roller cams will need less checks than solid lifter cams. Some guy's will get more junk in their oil buy pulling the valve covers causing more problems than if they didn't do anything. I change my oil with every oil pan replacement.


it's ok to butt heads, just don't do it with a butthead