Ford F–250 User Manual page 25

Engine lubrication for severe service operation
The following severe service operating conditions require unique engine
maintenance procedures:
towing a trailer over 1 600 km (1 000 miles)
sustained, high speed driving at Gross Vehicle Weight Rating
(maximum loaded weight for vehicle operation during hot
weather-above 32°C [90°F]).
frequent or extended idling (over 10 minutes per hour of normal
driving).
operating in severe dust conditions.
frequent, short trips of 16 km (10 miles) or less during freezing
weather
If you are operating your vehicle under any of these conditions, observe
the following service procedures:
Change engine oil and filter every 5 000 km (3 000 miles).
Use Motorcraft oil or an equivalent oil conforming to Ford
Specification ESR-M2C171–C or API categories CG-4/SH. Do not use
oils labeled with only one of the following category designations, SG,
SH, CE, CF-4 or CG-4, as they could cause engine damage.
For more information refer the Severe Duty Maintenance Schedule in
the "Service Guide".
REPLACING AIR CLEANER
When replacing the air cleaner, use a Motorcraft filter or its equivalent.
Refer to Lubricant and Maintenance Materials Specifications in this
supplement.
Failure to use the correct filter may result in severe engine
damage when driving through deep water and/or encountering
unusually heavy precipitation conditions.
1. Remove air cleaner, taking care to prevent dirt from falling into the
engine air intake.
2. Clean the air cleaner tray and cover to ensure good sealing.
General maintenance information
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