[SIZE="4"][/SIZE]My Chrysler is making a sound that happens from start to finish. The sound seems to be coming from the engine, It sounds like something is dry, it is loud, not a knock or ping or tapping or clanking noise. similar to a dry belt...any ideas?? My friend said add an oil additive and I did. He also said may have something to do with the Cam or crank shaft..I can't remember which one.