Emission Control System; Calculating Fuel Economy - Ford 2016 SUPER DUTY Owner's Manual

Results are most accurate when the filling
method is consistent.

Calculating Fuel Economy

Do not measure fuel economy during the
first 1000 miles (1600 kilometers) of
driving (this is your engine's break-in
period); a more accurate measurement is
obtained after 2000 miles - 3000 miles
(3200 kilometers - 4800 kilometers). 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 3 to 5 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 by dividing
miles traveled by gallons used (For
Metric: Multiply liters used by 100, then
divide by kilometers traveled).
Keep a record for at least 1 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.
Super Duty (TFA) Canada/United States of America, enUSA, First Printing
Fuel and Refueling
Conditions
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EMISSION CONTROL SYSTEM

engine compartment and exhaust system,
which can start a fire.
you smell exhaust fumes inside your
vehicle, have your dealer inspect your
vehicle immediately. Do not drive if you
smell exhaust fumes.
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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
pounds [180 kilograms] 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 kilometers) 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.
WARNINGS
Do not park, idle, or drive your vehicle
in dry grass or other dry ground cover.
The emission system heats up the
Exhaust leaks may result in entry of
harmful and potentially lethal fumes
into the passenger compartment. If