Sorry, my write-up wasn't clear. I did add the Sea Foam while the cars were running, and then shut them off immediately. Actually, on two of the cars, the engine lugged for a couple of minutes and then died, as I was adding the sea foam to the vacuum line. After the cars died, I let them sit for awhile before starting them up again. The instructions say to let it set for 5 minutes, but I left it longer than that.
I went ahead and ran a treatment through my Chevy truck, and also ran a third treatment through the Crown Victoria. So far, I really can't tell much difference in the way the cars run, but then they were running well even before the treatment. I am hoping that my oil consumption in the Crown Vic will decrease......if so, that alone will justify the time and expense of the treatment.
My plans are to "smoke" the cars again just before their next oil change. I figure as long as I am getting smoke out of the engine, I am probably burning out some of the gunk, so as long as there is gunk in there, I might as well keep trying to get it out.
