Antifreeze
When a car is manufactured, the cooling system is filled with a mixture of 50% ethylene glycol (antifreeze) and 50% water.
Since the cylinder head and water pump housing are cast from aluminum alloy, try to use coolant with 30-60% ethylene glycol to provide corrosion protection and prevent freezing.
Warning: If the antifreeze concentration is below 30%, it will have a negative effect on the anti-corrosion properties. In addition, if the concentration is above 60%, both the antifreeze properties and the engine cooling efficiency will deteriorate. It is necessary to maintain the concentration within the specified range.
Concentration measurement
Start the engine and wait until the coolant is completely mixed. Drain some coolant and measure its temperature, specific gravity and concentration. If the coolant lacks antifreeze, add it to a concentration level of 50%.
Replacing the coolant
1. Set the temperature control to high.
2. Remove the radiator cap.
Caution: Remove the plug slowly as the system is under pressure and the coolant may be hot.
3. Unscrew the drain plug and drain the coolant.
4. Drain the coolant from the reserve tank.
5. After draining the coolant, tighten the drain plug securely.
6. Pour coolant into the radiator until it is full to the filler neck.
7. Pour coolant into the reserve tank.
8. Warm up the engine until the thermostat opens, remove the radiator cap and check the coolant level.
9. Pour coolant into the radiator until it is full to the filler neck, then carefully screw in the radiator cap.
10. Fill the reserve tank with coolant up to the "FILL" line.