Severe Service Defined
GENERAL INFORMATIONMaintenance and lubrication service recommendations have been compiled to provide maximum protection for the vehicle against all reasonable types of driving conditions. These conditions vary with the individual vehicle owner's driving habits, the area in which the vehicle is operated and the type of driving to which the vehicle is subjected.
MAINTENANCE SCHEDULES
Two schedules are provided; one for "Normal," one for "Severe."
SEVERE SERVICE
Vehicles operating under severe service conditions will require more frequent service.
Component service information is included in appropriate units for vehicles operating under one or more of the following conditions:
1. Trailer towing or police, taxi, or commercial type operation
2. Operation of Vehicle
(1) Short-trip operation at freezing temperature (engine not thoroughly warmed up)
(2) More than 50% operation in heavy city traffic during hot weather above 32°C (90°F)
(3) Extensive idling
(4) Driving in sandy areas
(5) Driving in salty areas
(6) Driving in dusty conditions
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.