Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI2005LANCER L4-2.4L SOHCREPAIR AND DIAGNOSISMAINTENANCEFLUIDSCOOLANTSERVICE AND REPAIR
2005 Mitsubishi Lancer L4-2.4L SOHC
Coolant: Service and Repair
2005 Mitsubishi Lancer L4-2.4L SOHCSECTION Service and Repair
ENGINE COOLANT (CHANGE)
Check the cooling system parts such as the radiator, heater and oil cooler hoses, thermostat and their connections for leakage and damage. Changing Coolant
1. Set the temperature control knob to the HOT position.
2. Run the engine until the engine coolant warms, and then stop the engine.
WARNING: When removing the radiator cap, use care to avoid contact with hot coolant or steam. Place a shop towel over the cap and turn the cap counterclockwise a little to let the pressure escape through the vinyl tube. After relieving the steam pressure, remove the cap by slowly turning it counterclockwise.
3. Drain the water from the radiator, heater core and engine after unplugging the radiator drain plug and removing the radiator cap.
4. Drain the water in the water jacket by unplugging the drain plug of the cylinder block.
5. Remove the radiator condenser tank and drain the coolant.
6. Drain the cooling water then clean the path of the cooling water by injecting water into the radiator from the radiator cap area.
7. Apply the designated sealant to the screw area of the cylinder block drain plug, and then tighten to the standard torque.
Specified sealant: 3M AAD Part No.8731 or equivalent
Tightening torque:
[2.0L Engine] 40 ± 5 Nm (30 ± 3 ft. lbs.)
[2.4L Engine] 44 ± 5 Nm (33 ± 3 ft. lbs.)
8. Securely tighten the drain plug of the radiator.
9. Assemble the radiator condenser tank.
CAUTION: Do not use alcohol or methanol anti-freeze or any engine coolants mixed with alcohol or methanol anti-freeze. The use of an improper anti-freeze can cause corrosion of the aluminum components.
10. By referring to the section on coolant, select an appropriate concentration for safe operating temperature within the range of 30 to 60%. Use special tool MB991871 to refill the coolant. A convenient mixture is a 50% water and 50% antifreeze solution [freezing point: -31°C (-32.8°F)].
Recommended antifreeze: Long Life Antifreeze Coolant or an equivalent
Quantity:
[2.0L Engine] 6.0 dm3 (6.3 quarts)
[2.4L Engine] 7.0 dm3 (7.4 quarts)
NOTE: For how to use special tool MB991871, refer to its manufacturer's instructions.
11. Reinstall the radiator cap.
12. Start the engine and let it warm up until the thermostat opens.
13. After repeatedly revving the engine up to 3,000 r/min several times, then stop the engine.
14. Remove the radiator cap after the engine has become cold, and pour in coolant up to the brim. Reinstall the cap.
CAUTION: Do not overfill the reserve tank.
15. Add coolant to the reserve tank between the FULL and LOW mark if necessary.
Check the cooling system parts such as the radiator, heater and oil cooler hoses, thermostat and their connections for leakage and damage. Changing Coolant
1. Set the temperature control knob to the HOT position.
2. Run the engine until the engine coolant warms, and then stop the engine.
WARNING: When removing the radiator cap, use care to avoid contact with hot coolant or steam. Place a shop towel over the cap and turn the cap counterclockwise a little to let the pressure escape through the vinyl tube. After relieving the steam pressure, remove the cap by slowly turning it counterclockwise.
3. Drain the water from the radiator, heater core and engine after unplugging the radiator drain plug and removing the radiator cap.
4. Drain the water in the water jacket by unplugging the drain plug of the cylinder block.
5. Remove the radiator condenser tank and drain the coolant.
6. Drain the cooling water then clean the path of the cooling water by injecting water into the radiator from the radiator cap area.
7. Apply the designated sealant to the screw area of the cylinder block drain plug, and then tighten to the standard torque.
Specified sealant: 3M AAD Part No.8731 or equivalent
Tightening torque:
[2.0L Engine] 40 ± 5 Nm (30 ± 3 ft. lbs.)
[2.4L Engine] 44 ± 5 Nm (33 ± 3 ft. lbs.)
8. Securely tighten the drain plug of the radiator.
9. Assemble the radiator condenser tank.
CAUTION: Do not use alcohol or methanol anti-freeze or any engine coolants mixed with alcohol or methanol anti-freeze. The use of an improper anti-freeze can cause corrosion of the aluminum components.
10. By referring to the section on coolant, select an appropriate concentration for safe operating temperature within the range of 30 to 60%. Use special tool MB991871 to refill the coolant. A convenient mixture is a 50% water and 50% antifreeze solution [freezing point: -31°C (-32.8°F)].
Recommended antifreeze: Long Life Antifreeze Coolant or an equivalent
Quantity:
[2.0L Engine] 6.0 dm3 (6.3 quarts)
[2.4L Engine] 7.0 dm3 (7.4 quarts)
NOTE: For how to use special tool MB991871, refer to its manufacturer's instructions.
11. Reinstall the radiator cap.
12. Start the engine and let it warm up until the thermostat opens.
13. After repeatedly revving the engine up to 3,000 r/min several times, then stop the engine.
14. Remove the radiator cap after the engine has become cold, and pour in coolant up to the brim. Reinstall the cap.
CAUTION: Do not overfill the reserve tank.
15. Add coolant to the reserve tank between the FULL and LOW mark if necessary.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.