Well, I broke down and tried the ATF in the PCV valve trick we've talked about so much lately and the following results were achieved: 1. Not a speck of anything came out the exhaust. I guess maybe my motor wasn't as carboned up as I thought. 2. The motor DID run noticeably smoother after the procedure. I even had to adjust my idle a bit to compensate. So...............As long as no harm was done(and it doesn't appear there was), I would say it was a success.