Gas Milage - computer and sticker wrong

[hughesjv]

In the colder winter environment all the fluids in the engine, tranny differentials will be thicker which results in reduced gas mileage. Wheel bearing grease is thicker and reduced gas mileage. Tires are stiffer which increases rolling resistance and reduced gas mileage. Engine runs longer in an enriched state that reduced gas mileage. Winter blend gas has higher levels of high volatility compounds to assist in starting the engine but these compounds have less BTUs per unit volume reducing the BTU energy in a gallon of gas resulting in reduced gas mileage.

In my 55+ years of driving in New England every vehicle I have ever owned has gotten 3 or 4 mpg less than in the summer. And if you use remote start and/or let it idle for extended periods of time you will see a bigger hit to your mileage.

This is what I have suspected for the last few years! Thank you

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