Reply to "Why do we need the Radiator tank ???"

SO basically in theory we they are using the basic principles of a Hot Water heating system closed loop.

An air eliminator which they are doing it thru a tank ( why not thru a more modern method like a screen with a little float to let air out. and the second tank for expansion where we use bladder tanks the are under pressure on the other side of the bladder. My Mechanical backround is kicking in saying cant this be accomplished using some modern technology ... let see we use something called a SPIRO VENT for argument purposes 1/2 the size of the tank goes inline and has a float on top and relieves itself automaticly and also has a little drain on the bottom for getting rid of debris in the system which coleects on the screen .... then the expansion tank ...well convention heating system runs at 180 the expansion tank is sized on gallons of the system ... they may not make one small enough for a car but ... I will do some research ... I just think these two tanks are too large for the application ... but I'm betting the most cost effective ..... JUST BRAIN STORMING AGAIN.

Ron