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Originally Posted by kczukiman
Quote:
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Originally Posted by a1a5115
Well I have heard that gas companies make a "winter" blend and a "summer" blend. The winter blend is more volatile for easier starting and the summer blend is less so. Maybe the summer blend yeilds better milage.
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I would think just the opposit? |
Actually, California was one of the first states to mandate winter/summer gasoline (winter was Oct. 1 - Feb. 30 or something like that). I remember the winter stuff gave slightly less mileage vs. the non-winter stuff. When it first came out, the winter additive was MTBE or something like that, but I remember mileage was worse in the winter, which was questioned as defeating the purpose of cleaner gas.