Selection of the Oil Change Interval
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This machine is equipped with an engine that meets EPA Tier 2, Euro Stage II, or MOC Step 2 emission regulations. A 500 hour engine oil change interval is available, provided that operating conditions and recommended multigrade oil types are met. When these requirements are not met, shorten the oil change interval to 250 hours, or use an S·O·S oil sampling and analysis program to determine an acceptable oil change interval. If you select an interval for oil and filter change that is too long, you may damage the engine. |
Caterpillar oil filters are recommended.
Recommended multigrade oil types are listed in Table 1. Do not use single grade oils.
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| Illustration 1 | g00753767 |
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API Symbol Commercial oils that are licensed by the American Petroleum Institute (API) bear this symbol. Commercial oils that do not bear this symbol are not licensed and these oils are not recommended. Oils that are not listed in Table 1 are not recommended. | |
Abnormally harsh operating cycles or harsh environments can shorten the service life of the engine oil. Arctic temperatures, corrosive environments, or extremely dusty conditions may require a reduction in engine oil change intervals from the recommendations in Table 1. Also refer to Special Publication, SEBU5898, "Cold Weather Recommendations For All Caterpillar Machines". Poor maintenance of air filters or of fuel filters requires reduced oil change intervals. See your Caterpillar dealer for more information if this product will experience abnormally harsh operating cycles or harsh environments.
| D6R Series II
Engine Oil Change Interval(1) |
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| Multigrade Oil Type | Operating Conditions | |||
| Severe | ||||
| Normal(2) | High Load Factor(3) above |
Fuel Sulfur from 0.3% to 0.5% | Altitude above |
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| (4) | ||||
| Cat DEO
Preferred |
500 hr | 500 hr | 500 hr | 250 hr(6) |
| API CH-4
11.0 minimum TBN(4) Preferred |
500 hr | 500 hr | 500 hr | 250 hr(6) |
| API CH-4
TBN(4) below 11.0 |
500 hr | 500 hr | 250 hr(5) | 250 hr(6) |
| API CG-4 | 500 hr | 250 hr(5) | 250 hr(5) | 250 hr(6) |
| API CF-4 | 250 hr(5) | 250 hr(6) | 250 hr(6) | 250 hr(6) |
| (1) | The traditional oil change interval for engines is 250 hours. The standard oil change interval in this machine is 500 hours, if the operating conditions and recommended oil types that are listed in this table are met. Improvements in the engine allow this engine oil change interval. This new standard interval is not permitted for other machines. Refer to the applicable Operation and Maintenance Manuals for the other machines. |
| (2) | Normal conditions include these factors: Fuel sulfur below 0.3%, altitude below |
| (3) | High load factors can shorten the service life of your engine oil. Continuous heavy load cycles and very little idle time result in increased fuel consumption and oil contamination. These factors deplete the oil additives more rapidly. If the average fuel consumption of your D6R Series II exceeds |
| (4) | For sulfur content above 0.5%, refer to Operation and Maintenance Manual, "Total Base Number (TBN) and Fuel Sulfur Levels for Direct Injection (DI) Diesel Engines" in Manual, SEBU6250. |
| (5) | In order to verify an oil change interval of 500 hours, refer to "Program A" below. |
| (6) | Use "Program B" below to determine an appropriate interval. |
Adjustment of the Oil Change Interval
Note: Your Caterpillar dealer has additional information on these programs.
Verification for an Oil Change Interval of 500 Hours
This program consists of three oil change intervals of 500 hours. Oil sampling and analysis is done at 250 hours and 500 hours for each of the three intervals for a total of six oil samples. The analysis includes oil viscosity and infrared (IR) analysis of the oil. If all of the results are satisfactory, the 500 hour oil change interval is acceptable for the machine in that application. Repeat Program A if you change the application of the machine.
If a sample does not pass the oil analysis, take one of these actions:
- Shorten the oil change interval to 250 hours.
- Proceed to Program B.
- Change to a preferred oil type in Table 1.
Optimizing Oil Change Intervals
Begin with a 250 hour oil change interval. The oil change intervals are adjusted by increments. Each interval is adjusted an additional 50 hours. Periodic oil sampling and analysis is done during each interval. The analysis includes oil viscosity and infrared (IR) analysis of the oil. Repeat Program B if you change the application of the machine.
If an oil sample does not pass the analysis, shorten the oil change interval, or change to a preferred multigrade oil type in the listing above.
Reference: Form, PEDP7035, "Optimizing Oil Change Intervals"
Reference: Form, PEDP7036, "S·O·S Fluid Analysis"
Reference: Form, PEDP7076, "Understanding the S·O·S Oil Analysis Tests"
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Make sure to connect the proper oil grade plug to the wiring harness for the specific viscosity of engine oil that is used. Improper connections decrease engine performance, cold starting capability, and may damage the engine. |
Oil Grade Plugs are used on the C-9 engine in this machine to enhance start-up in cold weather conditions. When changing oil grades, the operator must ensure that the corresponding plug is inserted into the wiring harness. The oil grade plugs can be recognized by either the identification tags or by the color of the wires. The location of the oil grade plug is directly above the engine control module (ECM) on the left side of the engine.
The following plugs are used to inform the ECM when a particular grade of oil is being used.
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| Illustration 2 | g00852969 |
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Direct shipped oil grade plugs (1) Identification tag for 10W30 Oil Grade Plug (2) Identification tag for 15W40 Oil Grade Plug | |
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| Illustration 3 | g00852892 |
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214-7170 Repair Kit (3) 10W30 Oil Grade Plug (Green wire) (4) 15W40 Oil Grade Plug (Red wire) (5) 0W20 Oil Grade Plug (Black wire) | |
10W30 and 15W40 Oil Grade Plugs are shipped with the engine. The 0W20 Oil Grade Plug can be ordered from the parts manual. Order the 214-7170 Repair Kit. The 0W20 Oil Grade Plug can be made from a 175-3700 Connector Repair Kit. Refer to the Electrical Schematic or table 2 for the proper pin locations.
Note: An oil grade plug must be installed in one of three configurations at all times. Oil viscosity is not programmable through electronic control units (ET).
| 214-7170 Repair Kit | |||
| Oil Grade Plug | Wire Color | Pin Connection | Electronic Display (ET)(1) |
| 10W30 | Green | B-C | Range 2 |
| 15W40 | Red | A-C | Range 3 |
| 0W20 | Black | A-B-C | Range 1 |
| (1) | The Electronic Technician displays the reference: “Cold start engine oil weight range.” |
Insert the proper oil grade plug into the 3-pin connector from the engine wiring harness with the lead wires that are blue, brown, and yellow.
Procedure for Changing the Engine Oil and Filter
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Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
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| Illustration 4 | g00670606 |
If the machine is equipped with a high speed oil change, use a 126-7539 Nozzle.
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| Illustration 5 | g00490801 |
- Remove two bolts in order to remove the crankcase drain access cover, which is in the crankcase guard.
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Illustration 6 g00670611 - Remove the 4P-0520 Plug Adapter from the drain valve, if equipped.
- Install a
25.4 mm (1.00 inch) pipe into the drain valve. The pipe requires a 1-11 1/2 NPTF pipe thread. - Open the drain valve. Allow the oil to drain into a suitable container. A drain hose may be attached to the pipe to aid in draining.
- When the oil has completed draining from the crankcase, close the drain valve. Remove the pipe. Install the 4P-0520 Plug Adapter. Install the access cover.
- Open the lower access cover on the right side of the engine.
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Illustration 7 g00984822 - Remove the engine oil filter element and discard the engine oil filter element properly. Make sure that all of the old filter seal is removed from the filter base.
- Apply a thin coat of oil to the seal on the new filter. Install the new engine oil filter element by hand. When the gasket contacts the filter base, tighten the filter element by an additional 3/4 turn (270 degrees). Rotation index marks are on the new filter element. These rotation index marks are spaced at 90 degree intervals. Use these rotation index marks as a guide for proper tightening.
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Illustration 8 g00984824 - Open the right engine compartment access cover.
- Remove oil filler cap (1). Fill the crankcase with new oil. See the topic Operation and Maintenance Manual, "Refill Capacities" in this manual. Clean oil filler cap (1) and install oil filler cap (1).
- To ensure that the correct amount of oil was added, always measure the oil level with the engine oil dipstick (2).
Check the "ENGINE STOPPED" side of the dipstick while the engine is stopped. The oil should be cold. Maintain the oil level between the "LOW" mark and the "FULL" mark. This method should be used as reference only, before the engine is started.
- Check the "LOW IDLE" side of the dipstick while the engine is running. The oil should be at operating temperature. Maintain the oil level between the "ADD" mark and the "FULL" mark. This is the only accurate way to check the oil level.
- Secure the lower access cover on the right side of the engine. Close the engine compartment access cover.
