One of the few things I remember from college is that if you punch a hole in the bottom of a beer can, you can chug it very quickly.
So, I always remove the oil filler cap before draining oil.
But does this really help? Is there even an air passage between the valve covers and the oil pan, such that air displacement would take place?
So, I always remove the oil filler cap before draining oil.
But does this really help? Is there even an air passage between the valve covers and the oil pan, such that air displacement would take place?