Intelligent Oil-Life Monitor™ - Diesel Engine Only
Your diesel engine has an Intelligent Oil-Life Monitor that determines when you should change the engine oil based on how you use your vehicle. By using several important factors in its calculations, the monitor helps reduce the cost of owning your vehicle and reduces environmental waste at the same time.
This means you do not have to remember to change the oil on a mileage-based schedule. Your vehicle lets you know when an oil change is due by displaying a message in the information display.
The following table provides examples of vehicle use and its impact on oil change intervals. It is a guideline only. Actual oil change intervals depend on several factors and generally decrease with severity of use.

When to Expect the OIL CHANGE REQUIRED Message  
Interval   Vehicle Use and Example  
7,500–10,000 mi (12,000–16,000 km)   Normal  
Normal commuting with highway driving   No, or moderate, load or towing   Flat to moderately hilly roads   No extended idling  
5,000–7,500 mi (8,000–12,000 km)   Severe  
Moderate to heavy load or towing   Mountainous or off-road conditions   Extended idling   Extended hot or cold operation  
3,000–5,000 mi (4,800–8,000 km)   Extreme  
Maximum load or towing   Extreme hot or cold operation   Use of high sulfur diesel fuel  

Note:   Use the appropriate special operating condition for maintenance information when using high sulfur diesel fuels, operating your vehicle off-road or in dusty conditions, such as unpaved roads.
Normal Maintenance Intervals
Note:   Do not exceed the mileage or time intervals.
Gasoline Engines

7,500 mi (12,000 km) or Six Months Whichever Comes First  
Rotate the tires, inspect tire wear and measure the tread depth.1  
Inspect the wheels and related components for abnormal noise, wear, looseness or drag.  
Perform a multi-point inspection, recommended.  
Inspect front oil hubs for leaks and check fluid level through hub cap sight glass.  

1Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate the rear wheels if you notice unusual wear.

10,000 mi (16,000 km)/450 Engine Hours or 12 Months Whichever Comes First  
Change the engine oil and filter.  


15,000 mi (24,000 km) or 12 Months Whichever Comes First  
Inspect the automatic transmission fluid level. Consult an authorized dealer for requirements.  
Inspect the brake pads, shoes, rotors, drums, brake linings, hoses and the parking brake.  
Inspect the engine cooling system concentration, freeze-point protection, level and hoses.  
Inspect the exhaust system and heat shields.  
Inspect the steering linkage, ball joints, suspension, tie-rod ends, driveshaft and the U-joints. Lubricate any components that have grease fittings.  


Brake Fluid Maintenance29  
Every 3 Years   Change the brake fluid.310  

2 Perform this maintenance item every 3 years. Do not exceed the designated time for the interval.
3Brake fluid servicing requires special equipment available at your authorized dealer.

Other Maintenance Items  
Every 30,000 mi (48,000 km)   Replace the engine air filter.  
Every 60,000 mi (96,000 km)   Replace the front wheel bearing grease and grease seal if you have non-sealed bearings.  
Every 97,000 mi (156,000 km)   Replace the spark plugs.  
Every 105,000 mi (168,000 km)   Change the rear axle fluid. See  Special Operating Conditions Scheduled Maintenance .   
Inspect the accessory drive belt or belts.4  
Every 150,000 mi (240,000 km)   Change the automatic transmission fluid and filter. Consult an authorized dealer for requirements.  
Replace the accessory drive belt or belts if not replaced within the last 100,000 mi (160,000 km).  
Replace the front wheel bearings and seals if you have non-sealed bearings.  
Every 200,000 mi (320,000 km)   Change the engine coolant.5  

4If not replaced, inspect every 15,000 mi (24,000 km).
5Initial replacement at 10 years or 200,000 mi (320,000 km), then every five years or 100,000 mi (160,000 km).
Diesel Engine
Note:   Do not exceed the mileage or time intervals.

At Every Oil Change Interval as Indicated by the Information Display6  
Change the engine oil and filter.7  
Drain the fuel filter water trap.  
Refill the diesel exhaust fluid tank.  
Rotate the tires, inspect the tires for wear and measure the tread depth.8  
Perform a multi-point inspection, recommended.  
Inspect the air filter restriction gauge. Replace the filter if necessary.  
Inspect the automatic transmission fluid level. Consult an authorized dealer for requirements.  
Inspect the brake pads, shoes, rotors, drums, brake linings, hoses and the parking brake.  
Inspect the engine and secondary coolant concentration, freeze-point protection, level and hoses.  
Inspect the exhaust system and heat shields.  
Inspect the steering linkage, ball joints, suspension, tie-rod ends, driveshaft and the U-joints. Lubricate any components that have grease fittings.  
Inspect front oil hubs for leaks and check fluid level through hub cap sight glass.  

6Do not exceed one year/10,000 mi (16,000 km) or 350 engine hours between service intervals.
7Reset the Intelligent Oil-Life Monitor after engine oil and filter changes.   See   Oil Change Indicator Reset. 
8Rotate the front wheels on vehicles with dual rear wheels when specified. Only rotate the rear wheels if you notice unusual wear.

Brake Fluid Maintenance29  
Every 3 Years   Change the brake fluid.310  

9 Perform this maintenance item every 3 years. Do not exceed the designated time for the interval.
10Brake fluid servicing requires special equipment available at your authorized dealer.

Other Maintenance Items11  
Every 22,000 mi (36,000 km)   Replace the engine-mounted and frame-mounted fuel filters.12  
Every 30,000 mi (48,000 km)   Inspect the engine and secondary cooling system coolant concentration, freeze-point protection, additive, corrosion inhibitor, strength, coolant level, and hoses. Add coolant additive if necessary.13   Note: When adding coolant additive, do not exceed the specified maximum of 47 fl oz (1.4 L) for the engine and 20 fl oz (473 ml) for the secondary cooling system. Operating the engine with excessive coolant additive may cause overheating which could lead to severe, permanent engine damage.  
Every 45,000 mi (72,000 km)   Replace the air inlet foam filter.  
At 90,000 mi (144,000 km)   Inspect the accessory drive belt or belts.14  
At 100,000 mi (160,000 km)   Change the rear axle fluid. See  Special Operating Conditions Scheduled Maintenance .  15  
Every 150,000 mi (240,000 km)   Change the automatic transmission fluid and filter. Consult an authorized dealer for requirements.  
Replace the accessory drive belt or belts if not replaced within the last 100,000 mi (160,000 km).  
Replace the front wheel bearings and seals.  
At 200,000 mi (320,000 km)   Change the engine and secondary cooling system coolant.16  

11You can perform these maintenance items within 3,000 mi (4,800 km) of the last oil change. Do not exceed the designated distance for the interval.
12Every 22,000 mi (36,000 km) or as indicated by the information display.
13Every 30,000 mi (48,000 km), 1200 engine hours or as indicated by the information display.
14Perform follow-up inspections every 15,000 mi (24,000 km) after the initial inspection. Replace the belt or belts at 150,000 mi (240,000 km).
15Change the fluid again at 150,000 mi (240,000 km).
16Initial replacement at 10 years or 200,000 mi (320,000 km), then every five years or 100,000 mi (160,000 km).

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