German plastic radiator are mostly manufactured by BEHR and have what is called a dimple or ribbon tab. it is a little trickier than any other type of plastic radiator tab. I show you have to use just basic hand tools to remove and replace tanks and seals. A lot of equipment manufacture will try to sell you some expansive machine to reattach the tanks, but really I have used both, hand tools are more effective and faster. My video covers German plastic radiator rebuilding procedures and how to clean without ruining the core.