Being at 4200'+ elevation in central Oregon, we don't drain the "pink stuff" until we are ready to take off in the spring. Our weather changes in an instant also - case in point - yesterday it was sunny and warm; at this moment we are having a snow "downpour" and things are getting white again. Temps can go below freezing in a heartbeat. We'll be taking off sometime during the first part of April and will flush the lines a day or so before we pull out.
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