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We had another miserable winter in PA. I saw my average mileage drop to 25-26 mpg through it- thinking it might be due to 'warm ups' with remote start as I walked out to parking lot. The past week- with temps up into 60's I'm back up to 28 again- if anyone else is seeing this happen.
 

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Was averaging around 24-25 here in the harsh Maine winter. Doesn't get very good mileage when then temps are in the negative teens. Averaging now in the 27-28 mpg range and expect it to go even higher now that the temps are warmer and they have switch to "summer" fuel.
 

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I thought the formulation for Diesel changed in the winter time to prevent it from congealing. I was told that was part of the decline in MPG. My gas cars always got worse mileage in winter too.
 
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