I used air for a lot of years to winterize. I got a new compressor a few years back and plumbed the garage for air, including an air/oil/water separator. Looking at the gunk that it traps makes me cringe at the stuff I was blowing into my water lines.
I use the pink stuff exclusively now.
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2010 Laredo 245RL
2007 Dodge Ram 2500 CTD 4x4
Andersen Ultimate Gooseneck mount
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