On Sep 16, 2:09 pm, "Jim Burns" wrote:
The biggest difference between standard mogas and avgas would be that avgas
is actually manufactured to a tighter Mil spec than the petroleum industry
standard for mogas. It's also handled in ways to minimize contamination.
Mogas can be transported in the same pipline or truck directly after a load
of diesel or other fuel without any cleaning procedure. Mogas and diesel
fuel can be co-mingled in the same truck, in separate compartments. Avgas
must be handled and hauled alone. Avgas can only follow mogas or after
cleaning procedures. Same for Jet A, Jet A can follow a Kerosene shipment,
but not a diesel fuel or gasoline shipment.


Avgas is not transported by pipelines in the U.S. due to the existence
of TEL contaminating pipeline. They're all trucked, often from a
refinery half the country away. That's one of the big reasons why
100LL costs more than $1/gallon over mogas, and that price delta is
going to further increase as the overall consumption avgas decreases.