Maintenance and Service Guide

What Maintenance
Schedule Do You Follow?
Normal
Schedule
Follow the Normal Schedule for most normal
everyday driving conditions.
Severe Duty
Schedule
Follow the Severe Duty Schedule if your driving
habits FREQUENTLY include one or more of the
following conditions:
❑
Operating in severe dust conditions.
❑
Extensive idling, such as police, taxi or door-
to-door delivery service.
❑
Towing a trailer.
❑
Short trips of less than 10 miles (16 km) when
outside temperatures remain below 0° F
(-18° C).
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