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Old 03-02-2021, 01:53 PM   #11
84B23F
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Join Date: Feb 2008
Location: Kansas, USA
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The Vapor Rub: Summer versus Winter Gasoline Explained - Every September 15, as we resist switching to long sleeves and heated seats, fuel stations in all 48 continental states must begin dispensing winter-grade gasoline under strict federal deadlines. But topping off in Chicago isn’t the same tankful as in Boise. Enter the confusingly zoned world of winter and summer gasoline.

Vapor Lock - Don't know if a fire resistant tube insulation existed that would wrap around fuel line...insulation that would block infrared also. Heating the fuel line increases fuel pressure, and/or, vapor bubbles, in a closed system...otherwise, fuel vapor is passed on to atmosphere.
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