AC—oil or no oil?
Five year old Dometic rooftop air has required service by Dometic each year since installed. Seems to need a new control unit each time. Anyway, thought I’d do a little PM like blowing out the fins,...
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Sealed bearings are sealed, so oiling accomplishes little. Oil is the wrong lubricant for a bearing in any case, so once the seal fails the motor’s days are numbered unless you remove the seal and grease the bearing regularly.
