A11. CHANGE ENGINE COOLANT

Stop the engine after it is fully warmed up.

Add detergent to the engine coolant in order to flush the cooling system, and start the engine.

Loosen the drain plug, remove the radiator can and drain the coolant.

Feed fresh water into the cooling system through the filler port of the radiator in order to wash the cooling system, and then tighten the drain plug.

Drain the coolant from the reserve tank.

Install the reserve tank.

Depending upon conditions of operation, determine the amount of long life coolant, antifreeze or antirust to be added to the coolant.

Recommended antifreeze: DIA QUEEN SUPER LONG LIFE COOLANT or equivalent

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 the corrosion of the aluminium components.

Fill the cooling system with soft water through the filler port, and add long life coolant, if necessary.

) Fill the reserve tank with coolant.

Install the radiator cap and the reserve tank cap.

Recheck the engine coolant level after a road test.

CAUTION

When removing the radiator cap, be careful to blow out steam and boiling water.

REMOVAL OF ENGINE COOLANT FROM THE CYLINDER BLOCK DRAIN PLUG

Drain the engine coolant by removing the drain plug and then the radiator cap.

Remove the cylinder block drain plug from the cylinder block to drain the engine coolant.

Remove the reserve tank to drain the engine coolant.

When the engine coolant has drained, pour in water from the radiator cap to clean the engine coolant line.

Coat the thread of the cylinder block drain plug with the specified sealant and tighten to the specified torque.

Specified sealant: 3M Nut Locking Part No.4171 or equivalent
Tightening torque: 44 ± 5 N·m

Securely tighten the radiator drain plug.

Install the reserve tank.

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 LLC changer (MB991871) to refill the coolant.
A convenient mixture is a 50% water and 50% antifreeze solution (freezing point: -31°C).

NOTE: For how to use special tool MB991871, refer to its manufacturer’s instructions.

Recommended antifreeze: DIA QUEEN SUPER LONG LIFE COOLANT or equivalent
Quantity: 7.0 L

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 the corrosion of the aluminium components.

Install the radiator cap securely.

Start the engine and warm the engine until the thermostat opens. (Touch the radiator hose with your hand to check that warm water is flowing.)

After the thermostat opens, race the engine several times, and then stop the engine.

Cool down the engine, and then pour engine coolant into the reserve tank until the level reaches the FULL line. If the level is low, repeat the operation from step 10.


	A11. CHANGE ENGINE COOLANT Stop the engine after it is fully warmed up. Add detergent to the engine coolant in order to flush the cooling system, and start the engine.
	Loosen the drain plug, remove the radiator can and drain the coolant. Feed fresh water into the cooling system through the filler port of the radiator in order to wash the cooling system, and then tighten the drain plug. Drain the coolant from the reserve tank. Install the reserve tank.
	Depending upon conditions of operation, determine the amount of long life coolant, antifreeze or antirust to be added to the coolant. Recommended antifreeze: DIA QUEEN SUPER LONG LIFE COOLANT or equivalent 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 the corrosion of the aluminium components. Fill the cooling system with soft water through the filler port, and add long life coolant, if necessary. ) Fill the reserve tank with coolant. Install the radiator cap and the reserve tank cap. Recheck the engine coolant level after a road test. CAUTION When removing the radiator cap, be careful to blow out steam and boiling water.
	REMOVAL OF ENGINE COOLANT FROM THE CYLINDER BLOCK DRAIN PLUG Drain the engine coolant by removing the drain plug and then the radiator cap.
	Remove the cylinder block drain plug from the cylinder block to drain the engine coolant. Remove the reserve tank to drain the engine coolant. When the engine coolant has drained, pour in water from the radiator cap to clean the engine coolant line.
	Coat the thread of the cylinder block drain plug with the specified sealant and tighten to the specified torque. Specified sealant: 3M Nut Locking Part No.4171 or equivalent Tightening torque: 44 ± 5 N·m Securely tighten the radiator drain plug. Install the reserve tank.
	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 LLC changer (MB991871) to refill the coolant. A convenient mixture is a 50% water and 50% antifreeze solution (freezing point: -31°C). NOTE: For how to use special tool MB991871, refer to its manufacturer’s instructions. Recommended antifreeze: DIA QUEEN SUPER LONG LIFE COOLANT or equivalent Quantity: 7.0 L 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 the corrosion of the aluminium components. Install the radiator cap securely. Start the engine and warm the engine until the thermostat opens. (Touch the radiator hose with your hand to check that warm water is flowing.) After the thermostat opens, race the engine several times, and then stop the engine. Cool down the engine, and then pour engine coolant into the reserve tank until the level reaches the FULL line. If the level is low, repeat the operation from step 10.