[ModelA29]

They first started using it in dragrace engines to make the route for oil to drain back to the pan smoother/faster. Hi reving engines were pumping oil out of the pan faster than it was returning causing starvation.

Since the racers were using it Johnny Streetcruiser needed it for those 35 mph blasts down Whittier Blvd.
Do you need it? No. Will it hurt? No