Severe Maintenance Schedule

The following items must be serviced more frequently on vehicles mainly used under severe driving conditions. Refer to the table below for the appropriate service intervals.

R: Replace

I: Inspect and adjust, correct, clean, or replace if necessary

Severe Driving Conditions

A. Frequent short trips of less than 5 miles (8 km) in normal temperature or less than 10 miles (16 km) in freezing temperature
B. Extended engine idling or low-speed driving over long distances.
C. Driving on rough, dusty, muddy, unpaved, gravel or salted roads
D. Driving in areas using salt or other corrosive materials or in very cold weather.
E. Driving in conditions where sand or dust may enter the engine
F. Driving in heavy traffic
G. Driving on hills, downhill or mountain roads
H. Towing a trailer
I. Driving a police car, taxi, commercial vehicle, or towing a vehicle
J. Driving at speeds over 106 mph (170 km/h)
K. Frequent driving in stop-and-go conditions
L. Use of non-recommended engine oil (mineral type, etc.)