OK trekkie. Yer right about the source of the pressure not coming from blow by on the valves. I just pulled that one out my arse on the spur of the moment and later regretted it (but not enough to go back & edit the post). It's probably a combination of blow by on the rings and simple heat expansion of the air in the oil system.

Yer also right in how I used the acronym PCV. The V part does in fact ruin the point I was trying to make.

Yes, the fact that I'm admitting that you were right is paramount admitting that I was wrong.

I won't hesitate however to post my results (positive or negative) whenever I get around to putting on a crossover pipe. If for no other reason than to prove you wrong. Negative results are almost as beneficial as positive results as long as you learn from them. My first attempt at reducing oil consumption did not cure the problem but it certainly helped (& shouldn't have by your logic).

Question: If a crossover pipe on the valve covers will be of no benefit in your opinion, how do you feel about crossover pipes on a dual exhaust?