MPG Secrets

From : fmb

Q: this is an interesting read although most of you already know what you need to do to increase mpg. the paper is directed at otr trucks but most also applys to us. http//www.everytime.cummins.com/every/pdf/mpgsecretswhitepaper.pdf from rort cliff notes the most efficient drivers get about 30% better fuel economy than the least efficient drivers. ambient temperatures air becomes more dense as temperatures drop which increases air resistance. for every 10 f drop in temperature aerodynamic drag increases by 2%. thus fuel efficiency will drop by 1%. and i was thinking more dense air would give more air to the engine didnt think about drag speed above 55 mph each 1 mph increase in vehicle speed decreases mileage by 0.1 mpg. fuel blends while blended fuels provide better startability and protection against fuel gelling than standard #2 diesel fuel efficiency decreases. summer fuel improves mileage up to 3% more than winter fuel. fmb who drives above 55 most of the time .

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From : miles

fmb wrote air becomes more dense as temperatures drop which increases air resistance. for every 10 f drop in temperature aerodynamic drag increases by 2%. thus fuel efficiency will drop by 1%. and i was thinking more dense air would give more air to the engine didnt think about drag this is exactly why commercial airliners fly at rather high altitudes. they are extremely inefficient at lower elevations because of drag. even on short flights of only an hour they still climb to over 20000 even though climbing takes fuel. .