How many miles per tank?

[SirFer]

this may sound crazy, but I can get about 375 off of a tank. Driving between Stuart, FL, and Sarasota, FL. Or Sarasota, and Boca Raton, FL. I average about 65 mph, get about 13 or so mpg. I've never got down to the low fuel light level. My truck is one hundred percent stock, and I run 89 octane regular unleaded. When I'm at home for vacations and all, my driving becomes mainly city, so I get around 12.4 mpg, and I definitely have to fill up more often.