Quote:
Originally Posted by nelbur
Today there is no good reason to use different oil in the summer than in the winter. Todays multi-vis oils cover a wide range of temperatures, and the synthetics such as 0W40, cover even arctic conditions. Of course, a heating device may be needed in true arctic conditions. Your oil should be fine year around in your location. A problem starting is an indication that something else is going on, in my opinion.
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This exactly. I run the 15w-40 synthetic year round. Even when I lived up north, I never changed oil weights during the cold winter months.