Last week I blew out my sprinklers. I borrowed a compressor from a
friend. Then today while trying to hook up my hose to wash my car, I
accidentally hit the gate valve to my sprinkler feed line and a little
water got in to the PVC line that goes from my hose bib to the
sprinkler manifold under my deck. I was thinking if I poured a little
antifreeze into the line it would prevent any freezing from whatever
little water got in there. Any drawbacks to doing this?
(I have since removed the gate handle so it will not happen again).