Yes, they have radiators with plastic end tanks.

Right!, why did'nt you just say that!:rolleyes: , I've never seen one, come to think of it, they put plastic water header/filler bottles in as well don't they?, though they are more like nylon, than the brittle kinda plastic you get in pumps. so many kinds of plastic around nowadays though, [Homers Dads Voice]I.. remember when we only had Bake..e..lite...,[HDV], come to think of it WW buggers up plastic(or coats it?) if you put to much of a concentrate in as well does'nt it?...

Yeah, there is a Nissan radiator sitting out front that has plastic tanks on it. But if it can stand up to heat, it should be able to stand up to WW...