A Note About Severe Usage Condition Codes

If driving conditions include any of the following, refer to Severe Service.

Severe Usage Conditions
A: Towing a trailer.
B: Repeated short trips.
C: Driving on rough and/or muddy roads.
D: Driving on dusty roads.
E: Driving in extremely cold weather and/or salted roads.
F: Repeated short trips in extremely cold weather.