[crusierdad76]

the ones w did at the place i worked the vehicles were running so the idea was that whatever the stuff was it would be heading out the exhaust----kinda like in "THE DAY" when you would (Please tell me i'm not the only one to do this) rev the car up pretty high and pout some tranny fluid down the carb to help clean the carbon out of the cyllinders-----and after the SMOKE cleared we would do the same thing and shoot gummott down the carb to clear out the oil