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(1) Drain the freshwater tank using the petcock or other type of valve. Many trailers will have one like this. Higher-end trailers and fifth-wheels may have one in the utility compartment. Check your RV owner’s manual.
(7) Many RVs have icemakers that operate on 120-volt AC power only. While the ice tray itself doesn’t need to be winterized with RV antifreeze, the icemaker valve must be protected with RV antifreeze to prevent freezing and cracking from any water remaining in the bowl of the valve.
ntifreeze_Camco-RV-Antifreeze

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