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2013 Eco Boost F-150 Fuel Mileage Drop


P93suafilo

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When I first bought my truck in the early summer I was getting about 16.3 mpg then I changed out some bad O2 sensors and my mileage jumped to 16.7 mpg. I thought great the more standard maintenance I do the higher I will get, being I don't have a lead foot. Last month I decided to do some more and did the spark plugs, air filter, and oil. I expected my fuel mileage to jump after doing that but now its taking all I got to keep 16 mpg and on the highway its even worse. I did everything to spec and I am wondering why would my fuel mileage drop?
 


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snoranger

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Winter blend fuel?
 

P93suafilo

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That could be it! We did have some cold fronts roll through right after.
 

sgtsandman

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Winter blend fuel is what comes to mind for me as well. I noticed the drop as soon as they did the switch on my trucks.
 

adsm08

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I third the motion. As soon as I saw it happened in the last month it was my first thought.

I usually don't bother to track my MPG from Nov 1 through May 1 because the fuel blend and temps in those months just make it useless.
 


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