not good

Seafoam is a fantastic product. I have used it several times to clean carbon deposits from the intake tracts through the combustion chambers in the manor Pishta described. It does smoke A LOT when used like that. The first time I used it I was amazed at the smoke that it produced. It was day time and I did it and didn't think it would smoke that much for so long when I took it out down the highway. It was so bad that people had to slow way down and turn their headlights on and I wished I hadn't done it on the open busy road because I feel it creates a traffic hazard that is just plain dangerous. Never did it like that again. Got a buddy that lives out in the country and when I need to use it I go out there where their is no traffic.