Originally Posted by
ChrisH
Because when your crank is rotating it's splashing the oil everywhere, when you're driving it hard the crank is rotating faster which is splashing the oil up faster.
Not really, The PCV keeps the crankcase in vacuum at idle and other low throttle positions, keeping the oil in. But when driven up the road and the crankcase pressure rises, the oil will come out. the crank is well baffled