Fisherman wrote:
On the other hand, dragging around another tank that weighs something along with 55 gals of fuel, about 500lbs, definitely doesn't increase your fuel mileage.
But then again, considering the weight of a truck (6K lbs-8K lbs) plus dragging a 10K lb trailer for 16K lbs, 500 lbs in extra fuel will never be noticeable in any measurable amount of mileage loss..
I carry an extra 15 gallons of gas and combine that with the factory tank of 34 gallons I have 49 gallons of fuel to work with.
Average of 10 MPG towing and I have about 490 miles of "range".
My trips are typically 800 miles each way and having 490 miles of range means I can eliminate one fuel stop each way.. It also means I can drive past several states with super high road taxes saving some money.
Without the extra 15 gallons I had to "short stop" at half tank adding extra drive time and hassle finding a station in a couple places. If I didn't short stop, I would be on fumes by the time I found the next station..