Quote Originally Posted by DaveO View Post
If automotive antifreeze is not recommended, how is RV antifreeze different? Is it used in an rv for something other than cooling the engine? (Preventing drains from freezing...?)

Yes, it's the pink stuff that is used to keep the water lines from freezing not the kind you put into the radiator.

You can find it at just about any RV dealer, some Walmarts, and sometimes Sears.