Help! I seem to be getting fuel in my oil! It gets to the point that my oil becomes thin enough to foul my plugs. when that happens the engine will flood periodically and the only way to get it running again is to change the oil, clean or replace the plugs, disconnect the fuel pump and start the engine to run the fuel out of the cylinders, reconnect the fuel pump, and then it runs fine again until the oil gets thin again. The wierd part is that it seems to run fine with new plugs and new oil, i mean no smoke, no rough idling etc... The car will use approximately a quart of oil on a 300 mile trip. my thinking is that the rings are bad and I've discussed it with the Nissan dealer and thats the only thing they can figure. This is a 1983ZX, non-turbo, with 125,000 miles. Is there anything else I should check before a major overhaul? Just for info, had a rebuilt head put on about three years ago, and have checked the PCV valve and it seems to have good suction.