Quote:
Originally Posted by Old Mechanic
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10 gallons 1300 miles @130 MPG
10 gallons 700 miles @ 70 MPG
2000 miles and 20 gallons is 100 MPG.
Am I missing something?......
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Hi Mech,
Actually no.
However, the example above shows that to make a 70mpg tank + 130mpg tank = 100mpg overall,
it takes almost 2X the number of miles from the 130mpg tank to average 100mpg.
If one considers trips of the same distance, then 70mpg + 130mpg does not equal 100mpg.
This example again emphasizes my point. The lower MPG reading predominates, and it's hard to recover from lower MPG readings by adding in higher MPG readings.
It may not be easy, but it's better to take the lowest MPG readings, and find ways to improve them first.
So the question is: "how do we improve cold weather driving?"
Block heaters?
Engine blankets?
Filling in holes in wheel wells?
Insulation under the hood?
Others?
Jim.