bart,
well,,,i just did the whole seafoam thing, and i thnk it did a good job. i think i defenatly got better gas mileage after doing the treatment. the oil did look pretty dirty, and havent checked the trottle body after wiffing it in the tube. i used the tube on the intake, about 3-4 inches in front of the throttle body. i also went about 400 miles with the stuff in my oil, before i changed it.
but alas now i dont know since my truck threw a timing belt on wendsday. more on that in another post......i dont think it had anything to do with the seafoam, although my friend/ ase certified mechanic said he would never do it, and suggested i dont do it either. but i did it anyway. im going to be waiting for a while while the truck gets fixed, but looking forward to see what my gas milage will be AFTER getting my timing belt, and timing back on track. all that said, the jury is still out in my situation......i dont think the sefoam had anything to do with my breakdown
take it easy
david