[Samiterry]

quote:Originally posted by MDL

I don't want to side rail the thread either, but my question has always been, if you can use compressed air and put some antifreeze in the p-trap, why would you ever flood the entire RV water system with this pink antifreeze???? I have not idea what benefit it provides over blowing out the lines.

I blow out my lines, fill the p-traps with a cup or so of antifreeze, put it down the black and grey tanks (don't have a washer/dryer or dish washer), so what am I missing? What are the trade-offs???

Last November I not only blew out my lines, I also used about 4 gal. of antifreeze in the lines and p-traps. Thats without a clothes washer or a dishwasher. The benefit of doing all this is peace of mind that I did everything I could to assure of no broken lines this spring after having a -20*/-30* wind chill winter.