Severe Service Defined

MAINTENANCE
The scheduled maintenance services are based on the following:

1. Vehicle travel distance with passenger and/or cargo will be within the distance limits specified on the vehicle certification label located on the edge of the driver's door.
2. The road surface on which the vehicle travels is reasonable and the driving is within the legal operating limits.
3. Unleaded gasoline is used for the vehicle.

MAINTENANCE SERVICE SCHEDULES
Two maintenance service schedules are provided. Follow the "Normal Maintenance intervals" if the vehicle is operated mainly where none of the following conditions apply. If any of the following conditions apply, follow the "Severe Maintenance intervals."
- Repeated short distance driving
- Driving in dusty conditions
- Driving with an extensive use of brakes
- Driving in areas where salt or other corrosive materials are being used
- Driving on rough or muddy roads
- Extended periods of idling or low speed operation
- Driving for a prolonged period in cold temperatures and/or extremely humid climates

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 3,000 mile intervals.

At a minimum, recommend rotation at 9,000 and 18,000 mile intervals etc., or as close to the regular schedule as possible. Depending on vehicle usage and obvious tire wear, this recommendation should be increased as necessary.