FORD 2003 F-550 v.2 - Manual (Page 6)

BREAKING-IN YOUR VEHICLE
Your vehicle does not need an extensive break-in. Try not to drive
continuously at the same speed for the first 1,600 km (1,000 miles) of
new vehicle operation. Vary your speed to allow parts to adjust
themselves to other parts.
Drive your new vehicle for at least 800 km (500 miles) before towing a
trailer or snowplowing.
Do not add friction modifier compounds or special break-in oils during
the first few thousand kilometers (miles) of operation, since these
additives may prevent piston ring seating. See Engine oil in the
Maintenance and specifications chapter for more information on oil
usage.
SPECIAL NOTICES
Emission warranty
The New Vehicle Limited Warranty includes Bumper-to-Bumper
Coverage, Safety Restraint Coverage, Corrosion Coverage, and 6.0L
Power Stroke Diesel Engine Coverage. In addition, your vehicle is eligible
for Emissions Defect and Emissions Performance Warranties. For a
detailed description of what is covered and what is not covered, refer to
the Warranty Guide that is provided to you along with your Owner’s
Guide.
Introduction
6