Do you drain the water heater by removing the anode rod (Suburban) or drain plug (Atwood)?
How are you getting antifreeze into the toilet flush valve?
They have a tendency of having water still in them when you blow them out. It doesn't take much water for the valve to freeze and crack.
Do you remove the water filter and dump the water out of it?
No matter how much air you blow through the filter you will never empty all the water out of the canister unless you dump it.
Do you use your freshwater tank?
If you do then there is still water in the screen filter and water pump.
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Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, Seasonal since 2000.
Car Shredder Op/Tech, Scrap Metal Recycling - retired
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