mrad wrote:
Does anyone blow out their lines with an air compressor vs. runnign RV antifreeze through the lines?
I have a friend who uses his air compressor and then dumps antifreez in the drains and has never had a problem.
My concern is there could be water in the water pump that could freee and cause damage.
Any thoughts/opinions?
I blow out the lines and then add the antifreeze. I miss-read your original post. I am from Minnesota too. Unless you are crazy and want to gamble on just blowing out the lines, go ahead and chance on a large repair bill for burst lines.
There is always some water left in the lines that will collect somewhere and burst a line. Since we get way below zero (freezing below 32F) burst line is almost guaranteed before spring. Your friend is pushing his luck. His particular RV may have low point drains and he spent enough time blowing air to help dry the lines.
Adding antifreeze is good enough to protect the lines, but you can get by with a little less by blowing out lines first. It only takes us about 1/2 hour to do both and use 2 gallons of antifreeze. I use a quality hand-pump attached to gallon bottle, and a custom made hose that goes from pump and screws onto the fresh-water hose inlet.
If you live far enough south where only an occasional chance of short term freezing occurs blowing out lines only is acceptable.
