Notes on "Severe Service"

CAUTION: The maintenance intervals listed are for vehicles operating under normal driving, road, and climatic conditions. More frequent attention may be necessary if the vehicle is subject to routine stop & go driving, extreme temperatures, dusty conditions, off-road driving, or frequent trailer towing. Intervals should be cut in half for 'Arduous Use'.

For Arduous Use, at the least the following precautions must be observed:

- After 50 miles (80 km) of continuous use in severe off-road conditions wading, deep mud, and abrasive grit / slurry the ancillary engine drive belt(s) should be checked and cleaned.

- When the vehicle is used in dusty or off-road conditions or is subjected to deep wading, frequent replacement of the air cleaner may be required.