On Sat, 25 Mar 2006 20:43:47 GMT, Shortwave Sportfishing
wrote:

I have an 2000 F-250 Super Duty diesel with the 7.3 liter engine and
it's more efficient over time, cost me less in fuel, than the previous
F-350 gas pickup.

There are more BTUs in a gallon of diesel than a gallon of gasoline,
plus the combustion process for diesel is more efficient, primaily
because of the higher compression ratio. Taken as a whole diesel is
about twice as efficient at producing energy for a given volume of
fuel.