I have an 02 Frontier Nissan pickup, 144,000 miles, have a slight oil leak, suspect the PCV. It's a nightmare to change on this model 4 cylinder engine. I thought about replacing the oil fill cap with a breather cap. Should I work, but I can't find a screw in to fit. Looking for ideas on how to bypass the PCV. I thought about taking the filter inside the air cleaner out to get more vacuum any ideas. This is a small dense filter, comes off the hose coming off of the valve cover. Looking for suggestions!!!!!