harley4275 wrote:
Just do what 'old biscuit' said ...takes 2 minutes and piece of mind. plus gets rid of old water that may turn stinky.
Agree. I do all except drain the FW tank because I camp in winter here in Texas and the RV must always be ready. Opening the faucets at least gives the entrained water a chance to expand if it does freeze. I also flush the toilet wroth the pump of and let the flow stop completely before closing the flapper valve. Once the weather warms up I put a little water back in the bowl to ensure that the seal at the flapper valve does not dry out.