You wouldn't have to winterize.... until the power goes out.The oil sucker worked this year. The oil was hot and thinner after a day of 200 watt magnetic heater on the pan. Finally worked out why flow was inconsistent and removed oil filler cap to allow crankcase to breathe. I guess I will check my PCV valve. Put that heater on a baseboard heater thermostat circuit and you wouldn't have to winterize.