All I can say about this subject is it does allow the
oil to return quicker to the bottom... if your engine
is set up to allow the oil to return via the intake
valley then its no difference but it allows it quicker
to get there... I would prefer that than having the
oil up top in the valley doing nothing but draining
the pan... get it back as best you can... if you dont
like it hitting the crank then direct it to the rear
and drop it down there.. oil laying in the top is a
waste of oil........ JMO