Sorry for the confusion. yes, pour it in slowly with the car idling. eventually the engine will start burning some of it off as well as the carbon deposits. when that happens you will see an every so slight wisp of white smoke come out of the exhaust. that's when the engine and cylinders have enough seafoam saturated within. That's when I shut off the engine and let it sit and soak for at least 5 minutes. then I take it out for a spin to burn everything off. I don't have many close neighbors, so I don't care about making a smoke screen. most people just think it's dust or smoke from a nearby farm.So you pour it in while car is idling and then once its all in there and soaked you then take the car out for a hard run? Just confused because you said you pour it in and watch the exhaust for white smoke, but then said once its all in you start it up and go for a drive.