The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - PCV valve and a breather or just 2 breathers? 350 chevy

Rufton · 05-01-2013, 12:08 AM

When worn engine starts burning oil and oil fouling plugs you can switch to hot plugs and leaner AFR.

I concur, the PCV is very useful. I have a road draft crankcase ventilation car; the oil got black quickly until I added PCV.

05-01-2013, 12:08 AM	#6
Rufton Registered User Join Date: Apr 2013 Location: Knoxville TN Posts: 1,170	Re: PCV valve and a breather or just 2 breathers? 350 chevy When worn engine starts burning oil and oil fouling plugs you can switch to hot plugs and leaner AFR. I concur, the PCV is very useful. I have a road draft crankcase ventilation car; the oil got black quickly until I added PCV.