Fuel mileage questions
We just returned from a one day trip. The route was about 40 miles each way with a few short but steep hills on the freeway. On the way there I was following my sister in her car and had to go about...
Forum Discussion
As mentioned, very difficult to determine a true calculation of mileage off one refueling. To many variables. Speed, weather, terrain, coach loading and such.
What may have had the greatest effect with your numbers for this one trip is the volume of fuel that was in the tank when you started the trip as compared to the amount of fuel you added at the end of your trip. If the refueling added more to the volume of fuel then what you started with your numbers are not accurate for the trip. Since you only traveled a few miles a two gallon difference could have changed your numbers by as much as 2 MPG.
Also you need to find the power train's sweet spot. Best speed for fuel used. For my rig 2500 RPM/62 MPH will give me my best mileage of around 8 MPG or so. If I push my speed much higher fuel usage seems to increase exponentially.
What may have had the greatest effect with your numbers for this one trip is the volume of fuel that was in the tank when you started the trip as compared to the amount of fuel you added at the end of your trip. If the refueling added more to the volume of fuel then what you started with your numbers are not accurate for the trip. Since you only traveled a few miles a two gallon difference could have changed your numbers by as much as 2 MPG.
Also you need to find the power train's sweet spot. Best speed for fuel used. For my rig 2500 RPM/62 MPH will give me my best mileage of around 8 MPG or so. If I push my speed much higher fuel usage seems to increase exponentially.
