ok.. sounds promising.

PALMCASTER GT1 - I wish the market was like that but there is a radiator additive to help stop leaks.. When you add it, it also blocks many other things and causes big problems with engines, especially a water pump.

Lucas is great.. I have used Lucas oil stabilizer many of times. Its great, but its also not designed to be an engine flush. I'm talkign about the additive that cleans and releases any sludge in a crankcase.
So another concern I would have, is say I use the additive, and it does release a load of sludge and crap.. is that going to get into things i don't want it too?

I'm curious about the Tranny fluid idea. Detergents is exactly what you need to clean the internals. This is why I was thinking of running Diesel Oil for a for miles. My dads non diesel car from new has been using 15W50 Diesel oil, and his internals still look brand new. Super clean. Our car says to use only 5W40.