Good Reason to have a 337

[Ed Coffman]

Fuel Energy Content vs. Density
Fuels differ in density, and therefore, in
energy content per unit weight or unit
volume. Less dense fuels, such as avgas,
have a higher energy content per unit
weight and a lower energy content per
unit volume. The relationships are reversed
for more dense fuels.
Gravimetric Volumetric
Fuel g/mL lb/U.S. gal MJ/kg Btu/lb MJ/L Btu/gal
Aviation Gasoline 0.715 5.97 43.71 18,800 31.00 112,500
Jet FuelWide-cut 0.762 6.36 43.54 18,720 33.18 119,000
Kerosine 0.810 6.76 43.28 18,610 35.06 125,800
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Opel straight-6 engine

[Dale Campbell]

Well the T210 fatal accident in Lock Haven, Pa according to the NTSB was a total engine failure just short of airport, not a pilot error on the fuel exhaustion.