I am winterizing my Hi-Lo and am wondering about putting RV antifreeze in the fresh water tank and pumping it through the system. That is what the book says to do, but I don’t know if that is safe. Can I pull off the pump inlet hose and put it directly into the jug of antifreeze and pump it through the lines? —Dave A.
You can absolutely pump the antifreeze throughout the system as you suggested, but it might be easier by pumping it backwards through a faucet spout. In fact, a backflow kit with a hand pump is available for that very purpose. You can find the kit at such places as Walmart, etrailer.com, RV parts stores and Amazon.com.
But it is totally acceptable to pour the antifreeze directly into the fresh tank and use the RV’s water pump to pump it throughout the system as well. You can’t go wrong either way.