[JLMounce]

I too think that you probably just have a leak. The PCV may have been working okay.

Real crank case vent issues crop up in things like pushing oil out of the dip stick and ending your weekend cruise with an oil slick under the car or pushing oil past your control rings and producing blue smoke. Ask me how I know. I used a PCV supplied by Butler with the tomahawk valley pan I use. For around town everything was fine and functioned as you would expect. As soon as I started taking the car on long highway drives, that's when issues started to crop up for me. With somewhat steep gearing, short overall tire height and no overdrive, I would easily sustain 3000+rpm for maybe an hour or more at a time. This high rpm, high vacuum situation caused all manner of issues with my 455. On a trip to Bandimere speedway (75 miles) it pushed out enough oil from the dipstick to coat almost the entire barrel of the front passenger wheel. On the drive home, it wrecked what was left of the oil seals in the engine. The next morning I had well over a quart of oil on the garage floor.

If that's not happening, more than likely your PCV system was at least working for the type of driving you're doing.

I worked with Mighty Mouse Solutions to design a crank case ventiliation system adequate for my driving type and engine power. I ended up with their draft can/oil separator plumbed directly to the valley pan, bypassing a PCV valve all together. I recycle crank case gasses back to the combustion chamber, after separating oil and fresh air vents in to the engine via a single breather. It's worked incredibly well so far and in a year's time of driving the catch can accumulated about a teaspoon of oil is all.