Measure the temperature and specific gravity of the engine coolant to check the antifreeze concentration.
Standard value: 45 - 60% (allowable concentration range) Recommended antifreeze: High-quality ethylene glycol based coolant
caution
If the concentration is above 60%, both the anti-freezing and engine cooling properties will decrease, affecting the engine adversely. For these reasons, be sure to maintain the concentration level within the specified range.