Does the volume of air coming out of the oil fill hole have any significance? What exactly does it mean? I opened the cap on the Buick in my sig (24 years old) and no air was coming out while running, NONE. Where as my Accord has a considerable amount of air forcefully puffing out, no oil is added between changes in the Accord, have not owned the Buick long enough to know whether or not oil will need to be added in between changed. Does this have to do with the rings? Stem seals? Both have the PCV valve replaced.