2013 FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS MPG

Calculating fuel economy
Do not measure fuel economy during the first 1,000 miles (1,600 km) of
driving (this is your engine’s break-in period); a more accurate
measurement is obtained after 2,000 miles–3,000 miles (3,200 km–4,800
km). Also, fuel expense, frequency of fill-ups or fuel gauge readings are
not accurate ways to measure fuel economy.
1. Fill the fuel tank completely and record the initial odometer reading.
2. Each time you fill the tank, record the amount of fuel added.
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer
reading.
5. Calculate fuel economy as follows:
Standard: Divide miles traveled by gallons used.
Metric: Multiply liters used by 100, then divide by kilometers traveled.
Keep a record for at least one month and record the type of driving (city
or highway). This provides an accurate estimate of the vehicle’s fuel
economy under current driving conditions. Additionally, keeping records
during summer and winter show how temperature impacts fuel economy.
In general, lower temperatures mean lower fuel economy.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (approximately
1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight carried).
•Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski racks) may reduce
fuel economy.
•Using fuel blended with alcohol may lower fuel economy.
•Fuel economy may decrease with lower temperatures during the first
8–10 miles (12–16 km) of driving.
•Driving on flat terrain offers improved fuel economy as compared to
driving on hilly terrain.
•Transmissions give their best fuel economy when operated in the top
cruise gear and with steady pressure on the gas pedal.
•Close windows for high speed driving.
Fuel and Refueling35
2013 Motorhome(mot)
Owners Guide gf, 1st Printing
USA(fus)

•Carry unnecessary weight (approximately 1 mpg [0.4 km/L] is lost for
every 400 lb [180 kg] of weight carried).
•Add particular accessories to your vehicle (e.g. bug deflectors,
rollbars/light bars, running boards, ski racks).
•Drive with the wheels out of alignment.
DRIVING THROUGH WATER
If driving through deep or standing
water is unavoidable, proceed very
slowly. Never drive through water
that is higher than the bottom of
the wheel rims (for cars) or the
bottom of the hubs (for trucks).
When driving through water, traction or brake capability may be limited.
Also, water may enter your engine’s air intake and severely damage your
engine or your vehicle may stall.
Note:Driving through deep water where the transmission vent tube is
submerged may allow water into the transmission and cause internal
transmission damage.
Note:Once through the water, always dry the brakes by moving your
vehicle slowly while applying light pressure on the brake pedal. Wet
brakes do not stop the vehicle as quickly as dry brakes.
Driving Hints61
2013 Motorhome(mot)
Owners Guide gf, 1st Printing
USA(fus)