That's why God invented fuel computers. I know exactly how long I have
left on each tank and I don't need to scar the crap out of my wife and
pax to do it.

Interestingly enough, that was exactly the logic I was using the one
time I inadvertently ran a tank dry on my Twin Comanche. I was quite
surprised - there was supposed to be another 30 minutes of fuel left in
that tank.

Fuel computers are not infallible. However, I do agree that if you use
your fuel computer to draw ALL the fuel from the tank that is supposed
to be there, that's just as good as running one dry. It just doesn't
work if you leave, say, a 30m minute reserve there that you plan to get
later if you need it. It may not be there.

Michael