[PetChemMan]

I'm glad you found the problem ! A problem like that, unique to only a couple of engine lines, can certainly take time to track down. Usually, antifreeze getting into the cylinders will show up as excessive white smoke coming out the tailpipe, whereas oil causes blue-black smoke and too much gasoline causes sooty black smoke ( with a bad smell if the car has a catalytic converter). Speaking of unhappy smoke and odors, there's also the dreaded white smoke with an overheated electrical smell, always an immediate worry, especially if it's coming from the dashboard ! I suppose we have to also mention the raw gasoline smell coming from under the hood, the burning rubber smell from something bad happening to a tire, and the overheated brake smell from a dragging brake pad. I once had an underhood fire from power steering fluid spraying from a broken hose onto an exhaust manifold, and as I recall it smelled like hot automatic transmission fluid, plus, of course, a lot of smoke.