Originally Posted by Carl
talk to me about this "rod" you're replacing or removing?
with my stock water set up, explain.
I believe they're talking about the sacrificial anode that goes in the water heater. I didn't realize there was one in RV water heaters.
Because of dissimilar metals in water heater construction, you get electrolysis, the passiing of current between different metals as they try to achieve eletrical balance. This involves the consuming of the one metal that passes to the other. By deliberately placing a more reactive metal in the water heater, the anode sacrifices itself rather than any of the metals that the water heater is constructed of.
BTW, just last week I ordered a new radiator cap for my Bronco with an anode on it. An engie cooling system is just a different version of a water heater.