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Winterization with Antifreeze
To winterize with antifreeze you will need the following supplies and equipment:
  • 2 gallons of RV antifreeze
  • Paper towels or cloth towel to wipe up water and antifreeze
  • A water heater bypass device on the water heater feed
  • A 5' length of 1/2"  tasteless water hose
Step #1
Follow steps 1-4 from winterization with air.
Step #2
Disconnect the fresh water pickup hose from the water pump.  (This is lead from the fresh water tank).  Connect the 5' length of water hose to the pump where you just removed the water tank pick up line.  Secure the 5' length with the same clap that was used on the original hose.  Place the other end of the 5' length in one of your two gallons of antifreeze.
Step #3
Switch the bypass valve on the water heater to the bypass position.
Step #4
Turn on your water pump.  Open each faucet in the RV and let the water run until it turns the pink color of the antifreeze.  When you have finished this, reconnect the water hose to its original position and switch off the water heater bypass.
Step #5
Follow steps 6 and 7 from winterization with air.
To de-winterize your RV, fill the fresh water tank and flush the water lines until the water runs clear.

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