Wow I'm glad to hear winter fuel drops your mpg....I thought something was wrong! The f-150 went from 20ish to 18.xx just like that. Not a big change...1.5mpg and all...but I've got the same 5 mile to work/home for lunch/back for the afternoon/then home again 6 days per week so it's pretty consistent route.
Now you guys have got me thinkin' about a block heater....
Joe
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