You can use various methods and equipment to flush the cooling system. If special equipment is used (such as a back flusher) follow the manufacturer's instructions. However, always remove the thermostat before flushing the system.

Flush the oil cooler in order to prevent premature engine wear when the following conditions exist:

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Disconnect the negative battery cable.



2. Disconnect the engine oil cooler lines (2) from the mounting bracket.
3. Place a drain pan under the engine oil cooler line connectors.



4. Use a small pick-like tool in order to rotate the clip out of the connector.
5. Remove the cooler line quick connector clip.
6. Remove the engine oil cooler lines from the engine.

Notice: Do not use more than 690 kPa (100psi) air to clean the cooler and lines. Exceeding 690 kPa (100 psi) could damage the cooler or lines.

7. Use clean solvent and compressed air in order to back-flush the oil cooler and the lines.
8. Flush the system. Use the same type of engine oil that is normally circulated through the cooler.



9. Remove the oil filter (1). Discard the oil filter.
10. Clean all of the components in a suitable solvent. Dry the components with compressed air.
11. Inspect the following parts for damage or distortion:

•	The fittings

•	The connectors

•	The bushings

•	The cooler lines

12. Inspect the flow through the cooler. Replace the oil cooler if the flow is restricted.

Notice: Make sure the connector clip engages all three slots in the connector. Failure to properly install the connector clip could cause the oil cooler line to come loose and cause damage to the engine.




1. Use the following steps in order to install the cooler line quick connector clip:

1.1.	Insert the connector clip into one of the three recesses in the connector, using your thumb and forefinger.

1.2.	With one end of the clip engaged in the connector slot, rotate the clip around the connector until all three tabs snap into place.

2. Use the following steps in order to install the cooler line to the quick connector:

2.1.	Fully insert the oil cooler line into the quick connector.

Listen for a snap sound when the oil cooler line is assembled to the quick connector.

2.2.	Pull forcefully on the fitting in order to check the insertion.




3. Connect the engine oil cooler lines (2) to the mounting bracket.
4. Install a new oil filter (1).
5. Refill the engine oil to the correct level.
6. Connect the negative battery cable.
7. Start the engine.
8. Inspect the system for leaks.