FORD 1998 F-150 - Manual (Page 189)

Keep a record for at least one
month. This will provide an
accurate estimate of the vehicle’s
fuel economy.
EMISSION CONTROL SYSTEM
Your vehicle is equipped with
various emission control
components and a catalytic
converter which 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 unleaded fuel.
• Avoid running out of fuel.
• Do not turn off the ignition
while your vehicle is moving,
especially at high speeds.
• Have the services listed in your
“Service Guide” performed
according to the specified
schedule.
The Scheduled Maintenance
Services listed in the “Service
Guide” are required because they
are considered essential to the life
and performance of your vehicle
and to its emissions system.
If other than Ford, Motorcraft or
Ford authorized parts are used for
maintenance replacements or for
service of components affecting
emission control such non-Ford
parts should be equivalent to
genuine Ford Motor Company
Maintenance and care
189