hello guys im new to the site but im pretty familiar with these cars. I'm having a problem with burning some oil. ive noticed sometimes at higher rpms im leaving a smoke cloud behind me. The only thing is that it doesnt do it all the time. I had an oil leak at the rear of the lower intake so last weekend i decided to replace the intake gaskets and the valve guide seals thinking that those might be the cause but its still doing the same thing. I thought it might be the rings but the thing that gets me is sometimes i can run it hard from 1st to 5th gear and it doesnt even smoke a lil bit. the car has around 150,000 miles on it.. could the pcv be sucking this much oil? any ideas would be very helpful..