Well, you know they have the infomercials running late at night just about every weekend. The ZMax stuff that is supposed to clean up a shtz load of carbon build up and get your engine to run longer...yadda...yadda....they show an actual video of going into an engine before and after and it looks a lot more cleaner.........shiny too.........but then my 96 camry only has about 41000 miles on it.....
