Calculating Fuel Economy
Do not measure fuel economy during the
first 900 mi (1,500 km) of driving (this is
your engine’s break-in period); a more
accurate measurement is obtained after
1,900 mi (3,000 km).
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 fuel tank, record
the amount of fuel added.
3. After at least three 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 one month and
record the type of driving (city or highway).
This provides an accurate estimate of your
vehicle’s fuel economy under current
driving conditions. Keeping records during
summer and winter will show how
temperature impacts fuel economy. In
general, your vehicle will use more fuel in
cold temperatures.
Conditions That Affect Fuel Economy
•
Heavily loading your vehicle or towing
a trailer may reduce fuel economy at
any speed.
•
Carrying unnecessary weight in your
vehicle may reduce fuel economy.
•
Adding certain accessories to your
vehicle such as bug deflectors, rollbars
or light bars, running boards and ski
racks may reduce fuel economy.
•
Using fuel blended with alcohol may
lower fuel economy.
•
Fuel economy may decrease with lower
temperatures.
•
You will get better fuel economy when
driving on flat terrain than when driving
on hilly terrain.
•
Transmissions give their best fuel
economy when operated in the top
cruise gear and with steady pressure
on the accelerator pedal.
•
Close the windows for high-speed
driving.
EMISSION CONTROL SYSTEM
- 6.8L
WARNINGS
Do not park, idle, or drive your vehicle
in dry grass or other dry ground cover.
The emission system heats up the
engine compartment and exhaust system,
which can start a fire.
Exhaust leaks may result in entry of
harmful and potentially lethal fumes
into the passenger compartment. If
you smell exhaust fumes inside your
vehicle, have your dealer inspect your
vehicle immediately. Do not drive if you
smell exhaust fumes.
Your vehicle is equipped with various
emission control components and a
catalytic converter that will enable your
vehicle to comply with applicable exhaust
emission standards. To make sure that the
catalytic converter and other emission
control components continue to work
properly:
•
Use only the specified fuel listed.
•
Avoid running out of fuel.
103
F650750 (TBC), enUSA, First Printing
Fuel and Refueling
