Johnny Blue Lightnin'
I ran my ZR-7 down to reserve once just to see where the gauge would be when the gas ran out. Just as the needle dropped off the empty line is when the engine died. I switched to reserve then headed to the gas staion. IIRC it took about 4.6-4.7 gallons to refill it. I probably could have squeezed a little more in but I dont fill it up as far as absolutely possible. I leave a little room.