RE: Blow the lines out or put PINK in???
I use he pink stuff — have for many years. Unless it is easy for you to get the pump out, there is a danger that blowing out from the city water connection will shove water back to the pump and leave it there (happened to experienced friends). I like the idea of using air (and Harbor Freight sells a cheap filter system for your compressor if you worry about dirty air), but you must make sure that the air is getting all of the nooks and crannies in the plumbing system.
