With temps on Christmas weekend not to be much, if any, above freezing, it's time to winterize your power washer. To winterize mine, I disconnect washering hose, and with power running run a solution of 90% RV antifreez and 10% mineral oil thru the pump. Only takes a few ounces to do the job, displacing any water in the pump, plus lubricating the parts. Choose wisely where you want spray to go, as it's mostly mineral oil. I buy my mineral oil in the pharmacy section at Walmart