88 Taurus GL with a vulcan. I noticed recently that the klinging noise I get in park, or in neutral is getting louder. Some people say it sounds like piston slap, or a loose cam bearing. My oil light goes on when I stop at traffic lights....ONLY after the car is warmed up. I added a bit of oil yesterday and I noticed some of it was burned onto the dipstick. This seems to only happen when the car is warm and the oil thins out a bit. I changed the oil 2 months ago, but, the noise has done this since I bought it back in may last year. Is this my oil pump saying bye-bye? If so, is it easy to replace?