I Keep Pushing It
I am sure 3 gallons are left when the light comes on, havent run out yet but at 21 mpg city should have around 60 some miles.
That's what I'm figuring. After putting about 10 bucks(3.95/gal) in my tank, I allowed it to run down until the light popped on once. Then I added 1 gallon, checked until that light came on again, checked the odometer, I got about 20 mpg city (Chicago). So now I'm adding fuel as I need it, planning all but the shortest trips. The light is not 'linear', it seems to come on based on how you drive and what's in the tank, but if I skip the first light, I'll refuel on the second, just to avoid that fuel pump problem. My Taurus is a 2003 model.