The Ford Barn - View Single Post

flatjack9 · 05-06-2011, 05:14 PM

The crankcase air left the engine by way of the road draft tube. Air entered through the ventilated oil fill cap. As far as the need for it, I don't happen to have one on mine and after 17 years of use and around 50,000 miles there is absolutely not even a hint of any sludge formation. I'm sure it's due to the vastly superior oils we have today.

05-06-2011, 05:14 PM	#11
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,600	Re: Opinion on PCV valve for flathead? The crankcase air left the engine by way of the road draft tube. Air entered through the ventilated oil fill cap. As far as the need for it, I don't happen to have one on mine and after 17 years of use and around 50,000 miles there is absolutely not even a hint of any sludge formation. I'm sure it's due to the vastly superior oils we have today.