Marvel Mystery Oil

[VX KAT]

PCV's are basically installed and built-in to compensate for increasing "blow-by" as engine's age. The older they get, the more blow-by...and need for pressure equalization.

IMO, the question is whether issues with ring design is causing pre-mature blow-by....and "engagement" of the PCV function.

wow, that's interesting, I didn't know how the pcv worked.
What would happen if the pcv valve got stuck closed?

[tom4bren]

wow, that's interesting, I didn't know how the pcv worked.
What would happen if the pcv valve got stuck closed?

On one of the engines I just mentioned, it caused oil to spray out of the dipstick tube. $8 & 5 minutes of labor later & I was back to 2000 miles to the quart.