Jerry Wass wrote:

Barnyard BOb wrote:
Jerry Wass wrote:

Hey There BYB---gotta poligize--Your anus is of the darker hue---Dug me
out some Avgas & weighed 250 cc's of it----179 gms---then weighed some
Mogas--168.3gm ----6.3% HEAVIER!!---(gettin closer to summer here in
OK,must be puttin more asphalt in it.)---Jerry
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Jerry,
Your ORIGINAL ARGUEMENT WAS....

"Hate to disagree. but there are more BYU's in a GALLON of Avgas than
in a GALLON of Mogas. Why?? Avgas weighs more per Gallon..."

Weight of fuel is irrelevant when it comes to btu/gal....
assuming your BYU reference was meant to be btu.
Btu/gal is a VOLUME measurement, not one of weight.

Thank you for your time and patience.

- Barnyard BOb -

Wow-Screwed up again!!Got the weights transposed--Mogas IS heavier than
Avgas!!double apology--Jerry
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Jerry,
I have purposely distanced myself from weight specifics
since my sources state energy content BY VOLUME,
which is the convenient way we buy fuel at the pump.

Found another web site stating values by GALLON, not weight.
[No idea how accurate these values are.]
http://www.jwiwood.com/faq/conversion.html
Too bad they make no reference to avgas.

For grins.....

1 gallon of crude oil ... 138,095 Btu
1 gallon of kerosene or light distillate oil ... 135,000 Btu
1 gallon middle distillate or diesel fuel oil ... 138,690 Btu
1 gallon residential fuel oil ... 149,690 Btu
1 gallon of gasoline ... 125,000 Btu
1 gallon of ethanol ... 84,400 Btu

P.S.
If these figures are reasonably accurate...
It takes MORE than a gallon of crude to produce a gallon of diesel.
Double ditto for residential fuel oil.


- Barnyard BOb -