A lot of "radiator shops" haven't soldered anything in a long time- - - -all the radiators they work on are made of aluminum with plastic tanks, rubber O rings, and crimped seams.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!