In the aviation world, pilots - and mechanics fro that matter - have to
deal with weight issues and center-of-gravity issues for the purpose of
balancing loads in airplanes for controlable flight. On aspect of that
for the pilot on every flight is working with the "useful fuel" load on
the airplane. There is a total fuel, and usable fuel. And  residual
fuel, ie, fuel in the airplanes systems, which cannot be burned, but
affects the empty weight of the ariplane. This unburnable fuel has to be
accounted for.

I wonder what the "useful fuel" load is on our Vans. Book fuel tank
capacity vs the useable fuel - that which can actually be burned. How
much is let in the system whne the engine quits from fuel starvation. Is
the tank truly empty?? or is there a residual left in the system
including the tank?. And how much?

Just curious.

John Rodgers
88 GL Driver.x2