When to expect the message prompting you to change your oil
Vehicle use and example
Interval
Normal
7500-10000 miles
(12000-16000 km)
Normal commuting with highway driving
No, or moderate, load or towing
Flat to moderately hilly roads
No extended idling
Severe
5000-7499 miles
(8000-11999 km)
Moderate to heavy load or towing
Mountainous or off-road conditions
Extended idling
Extended hot or cold operation
Extreme
3000-4999 miles
(4800-7999 km)
Maximum load or towing
Extreme hot or cold operation
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Navigator (TB5) Canada/United States of America, enUSA, First Printing
Scheduled Maintenance