Great...so that means I can go about 40 miles with the light on in a crunch (not that I plan to mind you).
I'm curious about how you found this out...calculations, standard info etc. I'm trying to get the same info for my girlfriend's car (she has an '04 Nissan Altima), but I was coming up with 5 gallons in reserve. Before doing my calculations on my own car I decided to ask here.