Quote:
Originally Posted by lendaddy
The Draino is likely sodium hydroxide (Lye) which will not hurt or react with copper, brass, plastic or steel as best I know. It will however eat the hell out of aluminum so be warned there, it literally dissolves aluminum.
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Not like there is any aluminum in a modern day vehicle, Radiator, heater core, cylinder heads, water pump, intake manifold, and on some never vehicles the block.
