Question for Mastergreen. Are the calculations you use different for a fuel starved engine rather than throttles at idle? My point being that an engine at idle is still providing the power to "windmill" itself whereas a fuel starved engine is probably windmilling due to the aircraft's forward speed and causing drag as it does, decreasing your range. And how about where all engines are seized up, as happened to an Eastern Airlines L1011 back in the 70's. If the engines can't turn, how much more drag does that induce? (They were able to get one re-lit and make it back to Miami, only to have it shut down right again after landing.)