[FireSale]

"Bad stuff" in the water will break down the metals in the engine and cooling system. Think rust. Bad stuff attacks the weakest metal around first. An anode is just a stick of metal that is chemically weaker than anything else around so the anode is broken down and not so much the motor metals. I think it's usually magnesium. Since it's the water that carries the bad stuff, I don't think a neutral thing like a rubber hose would insulate anything.
I did not run one last season and got a lot of rusty water out of my Dart SHP. Distilled water only.



Someone correct me on the chemistry here.