Severe Service Defined

SEVERE SERVICE
The term "Severe Service" is defined as operating the vehicle under any of the following conditions:

^ Frequent short trips driving less than 5 miles (8 km)
^ Frequent driving in dusty conditions
^ Extensive idling
^ Trailer towing
^ Sustained high speed operation
^ Off road driving
^ Desert operation
^ Frequent starting and stopping
^ Cold climate operation
^ Short trip operation at freezing temperatures (engine not thoroughly warmed up)
^ Commercial service
^ Stop and go driving

NOTES ON "SEVERE SERVICE"
Some vehicle manufacturers provide separate maintenance procedures for vehicles operated under Severe or Special circumstances. Other manufacturers provide recommendations for service at more frequent intervals for vehicles operated under severe conditions. For any vehicle operated under severe conditions, as defined by the vehicles manufacturer, always check the regular maintenance schedule for procedures that may not appear at the similar interval under severe service.

Example:

Manufacturer recommends tire rotation at 10,000 mile intervals under regular maintenance.

There is no tire rotation recommendation shown in the severe service schedule, which has 3000 mile intervals.

At a minimum, recommend rotation at 9000 and 18,000 miles, or as close to the regular schedule as possible. Depending on vehicle usage and obvious tire wear, this recommendation should be increased as necessary.