3.8 V-6 and I'm wondering about the gas mileage. I filled it up a week or so back, hit the trip meter and drove it until it was buried on empty and the low fuel light was on. I drove 302 city miles before filling it again. It was full at 15.3 gallons. The handbook says it has an 18 gallon tank. True or not? If true, I still had 2.7 gallons in the tank? I mean the needle was dead on E and I didn't want to drive any further before getting gas. Thoughts?