My car gets "stored" for about 5 months through a cold winter. I change the oil before I start it in April, not when it goes into storage in November. I only put about 2500 miles on between oil changes. I use syn blended oil. My logic is that the oil does not go "acidic" just sitting in the engine for 5 months. Now I suppose that a person could drain the oil in November and let the engine sit without oil all winter to counter the acidic idea. But....I see no harm in high quality, low mileage oil sitting in the engine sump for only 5 months.

So in April, I change the oil, hook up the battery and start it up just like I would if it had been run all through the winter. The car is 20 years old and so far no problems with this approach.

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