I seem to remember that some time ago there was a discussion concerning an inline filter or screen of some sort that could be placed inline a radiator hose. Does anyone recall the supplier of those filters... has anyone used them... results? Seems like a good idea to run one for a while, after a system flush , to be sure all contaminants are removed from the block and so as not to re-clog ( now theres a word) a new radiator core. Mike