SeaFoam
well i don't remember the exact specifics of the failure but some of the injectors were GM Multitechs and others were the poppet valve style. i know they're both a lil sensitive to clogging as it is and maybe it's just the combo of seafoam and these injectors that's not good. IIRC, and i'm not positive that i do, they were hanging open or were stuck open after using seafoam. like i said, some guys swear by using seafoam in they're diesels. i just won't without some hard proof because i've seen what it does to gas engines. that's all.
Clay, I have seen lots of reasons not to use it. Let me do some searching for ya and I will find the results as to what actually is up with that stuff. There were actually a lot of really good reasons not to put it in your truck. Just bear with me a little.



