I am posting to get some imput on winterizig my camper . Last year i used the red non-toxic antifreeze , and took forever to get it out one we started camping again . This time im trying the air meth...
For the water heater, pull the drain plug, turn the bypass valves (qty 3...close the hot, close the cold, open the cross-feed) and you're done. There will be residual water at the bottom of the tank. This is not a problem as there is plenty of room for expansion when that residual water freezes.