Specific Gravity Test
SPECIFIC GRAVITY TEST1. Measure the specific gravity of the coolant with a hydrometer.
2. Measure the coolant temperature and calculate the concentration from the relation between the specific gravity and temperature. Use the following table for reference.
RELATION BETWEEN COOLANT CONCENTRATION AND SPECIFIC GRAVITY:
Example: The safe operating temperature is -15 °C (5 °F) when the measured specific gravity is 1.058 at coolant temperature of 20 °C (68 °F)
RECOMMENDED COOLANT:
CAUTION: If the concentration of the coolant is below 30%, its anti-corrosion property will be adversely affected.
If the concentration is above 60%, the engine cooling property will decrease, affecting the engine adversely. For these reasons, be sure to maintain the concentration level within the specified range.
Do not mix types of antifreeze.