I know the tank holds 6.6 gallons but I have never put more than 5.5 gallons in it. Today I got 234 miles out of 5.5 gallons which figures to be about 43 MPG. I guess my question is, how far have you gone once the fuel light comes on? If my math is correct I could go around 280 -300 miles on a tankful but I'm afraid to push it that far. Is there a reserve?