Originally Posted by TheRabbit

OK plane and simple ( which is how I asked him to explain it to me)
You want to create the most amout of vacuum possible with the oil pump. With only 4 stages like mine you put all of them in the pan under the rings.
6 stages you would put the other 2 in the head and lifter valley which really helps keep the windage down.
Hey thanks for the ? I learned something new.