Ford Focus Forum, Ford Focus ST Forum - View Single Post - anyone using premium gas ?
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Old 01-25-2013, 04:05 PM   #34
suss6052
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Quote:
Originally Posted by mishka View Post
??? I've never heard of winter gas or summer gas until now. Is there a way to tell what i'm pumping into my tank at the gas station? Or is it all winter gas in the winter?
It's seasonal, so now that we are in the winter time frame (after november usually) they blend in a fuel that vaporizes more readily to aid in cold engine starts, but the additives and the formulation of the gas is less energy dense, and less efficient than the fuel sold during the spring through the fall/ (aka the summer fuel blends).
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