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Frank[_24_] Frank[_24_] is offline
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Default What is the realistic accuracy & precision of typical consumerMPG calculations (tripmeter miles/pump gallons)

On 7/20/2017 3:47 PM, Ed Pawlowski wrote:
On 7/20/2017 3:06 PM, trader_4 wrote:

Why is it hogwash? They seem to be saying the same thing you are,
that the energy content means that what you see as MPG will
vary because of it. If you have gas with higher energy content,
then you'll see 25 mpg. If it's lower energy content, you'll
see 23 MPG. How much the energy content varies, when it's
labeled as the same product, eg reg unleaded, IDK. It would
obviously vary depending on the amount of ethanol added.



Seems to be some confusion. Sure, the pure gas will give you more
distance per gallon. The computer readout though will say the same for
pure gas, gas with ethanol, or a bottle of bourbon.

The readout on the computer still says 25 even though you only get 23.
Sort of like saying if you had pure gas this is what you;d have gotten
but you got something else.


This is interesting:

http://newsroom.aaa.com/2013/06/what...lend-gasoline/

It seems to me that I am getting slightly lower mileage this summer but
maybe because it has been very hot and AC is on all the time.

I prefer to store summer gas for my generator because winter gas puffs
up the sealed plastic cans in summer heat.