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Old 10-16-2012, 12:02 PM   #11 (permalink)
Diesel_Dave
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Join Date: May 2011
Location: Indiana
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White Whale - '07 Dodge Ram 2500 ST Quad Cab 2wd, short bed
Team Cummins
90 day: 37.68 mpg (US)
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Quote:
Originally Posted by rbrowning View Post
A few years ago I was commuting 180 miles a day in a Silverado that got 18MPG so I was burning 10 gallons of gas per day. That can lead to desperation at the pump. At that time Speedway was usually 5 cents per gallon less than BP so I was buying it regularly. I decided to see if the BP was worth the extra money or not. I logged each tank and only compared tanks used only for commuting, no weekend in-town driving. After I had 10 tanks of each I found that the cost of the BP was 1.6% more but the mileage was 8.3% better.

Not all engines respond the same, my Impala doesn't seem to have a preference, at least not that I have found yet.
Interesting.

How long of a period of time was this over? Were there seasonal changes? My logs show about a 1% change in FE for every 2 deg F temperature change. So if you're comparing to different time periods with different temperature that could potentially skew the data.

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Diesel Dave

My version of energy storage is called "momentum".
My version of regenerative braking is called "bump starting".

1 Year Avg (Every Mile Traveled) = 47.8 mpg

BEST TANK: 2,009.6 mi on 35 gal (57.42 mpg): http://ecomodder.com/forum/showthrea...5-a-26259.html


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