some of you are thinking of the fuel system which is not what i was meaning. In my F350 IDI SCA keeps cavitation from happening and is added to the coolent. they mentioned in the cavitation document that newer engines had elc or something so I was trying to figure out what mine used and if it needed any treatment. see below link for the explination, really good info.
TikiWiki : Cavitation - The Complete Guide
Jony: Denhartog? 45hp I am tempted to get one of those filters for my 350 but thats down the line a bit.
unhappy: Depends on the engine. my 7.3IDI is not wet and is prone to cavitation. it is possible to sleve it down to a 6.9 from what i under stand due to it just being an over boored 6.9 and is a solution to it.