Unless you are in a controlled climate indoor storage facility, condensation is your enemy when it comes to stored vehicles. As the temps change during the day, the moisture that builds up will cause the engine to rust from the inside. Although oil and water don't mix, the oil WILL transport the condensate/water throughout the engine and if it doesn't come up to operating temp long enough to evaporate it, then you have moisture throughout the oil ports in the engine that sits and does its damage. That's why it's not a great idea to run the engine if you're not going to bring it completely up to temp. Lot's of motorcyclists like to go out to the shed to hear the engine run for a few minutes during the winter since they can't ride...thinking that they are doing good by "circulating" the oil. In reality, they are causing harm by circulating the water that has built up in the oil pan and other places from condensation inside the engine and not getting it hot enough to evaporate it.
It's a good idea to have fresh oil in the coach before putting it to bed for the winter, but with only 1K miles on the current oil, you'll be fine until you get it out in the Spring and take it up the road to get the engine up to temp! My $.02 worth....
1999 Holiday Rambler Endeavor, 36' Gasser
Triton V10, Ford F53 Chassis
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