Lubricant Selection: Coolant
WARNING: This page is about a different variant/trim than selected.
Relationship between Coolant Concentration and Specific Gravity
CAUTION:
- If the concentration of the coolant is below 30%, the anti-corrosion property will be adversely affected. In addition, if the concentration is above 60%, both the anti-freeze and engine cooling properties will decrease, affecting the engine adversely. For these reasons, be sure to maintain the concentration level within the specified range.
- Do not use a mixture of different brands of anti-freeze.
COOLANT TEMPERATURE SPECIFICATION
| Coolant temperature °C (°F) and specific gravity | Freezing temperature | safe operating temperature | Coolant concentration (Specific volume) | ||||
|---|---|---|---|---|---|---|---|
| 10 (50) | 20 (68) | 30 (86) | 40 (104) | 50 (122) | °C (°F) | °C (°F) | % |
| 1.054 | 1.050 | 1.046 | 1.042 | 1.036 | - 16 (3.2) | - 11 (12.2) | 30 |
| 1.063 | 1.058 | 1.054 | 1.049 | 1.044 | - 20 (-4) | - 15 (5) | 35 |
| 1.071 | 1.067 | 1.062 | 1.057 | 1.052 | - 25 (-13) | - 20 (- 4) | 40 |
| 1.079 | 1.074 | 1.069 | 1.064 | 1.058 | - 30 (-22) | - 25 (- 13) | 45 |
| 1.087 | 1.082 | 1.076 | 1.070 | 1.064 | - 36 (-32.8) | - 31 (- 23.8) | 50 |
| 1.095 | 1.090 | 1.084 | 1.077 | 1.070 | - 42 (-44) | - 37 (- 35) | 55 |
| 1.103 | 1.098 | 1.092 | 1.084 | 1.076 | - 50 (-58) | - 45 (- 49) | 60 |
Example
The safe operating temperature is -15°C (5°F) when the specific gravity is 1.058 at the coolant temperature of 20°C (68°F)