The relationship between the concentration of antifreeze in the coolant and the specific gravity
| Coolant temperature°C and specific gravity | Freezing point | Safe operating temperature°C | Coolant concentration | ||||
| 10 | 20 | 30 | 40 | 50 | |||
| 1,054 | 1,050 | 1,046 | .1,042 | 1,036 | -16 | -11 | 30% |
| 1,063 | 1,058 | 1,054 | 1,049 | 1,044 | -20 | -15 | 35% |
| 1,071 | 1,067 | 1,062 | 1,057 | 1,052 | -25 | -20 | 40% |
| 1,079 | 1,074 | 1,069 | 1,064 | 1,058 | -30 | -25 | 45% |
| 1,087 | 1,082 | 1,076 | 1,070 | 1,064 | -36 | -31 | 50% |
| 1,095 | 1,090 | 1,084 | 1,077 | 10,70 | -42 | -37 | 55% |
| 1,103 | 1,098 | 1,092 | 1,084 | 1,076 | -50 | -45 | 60% |
2. Measure the coolant temperature and, depending on the temperature, calculate the concentration of antifreeze in the coolant.
Example
Safe operating temperature -15°C at a weighted specific gravity of 1.058 and a coolant temperature of 20°C
Attention!
- If the coolant concentration is below 30%, the anti-corrosion properties of the coolant are reduced.
- At concentrations over 60%, the frost resistance of the coolant deteriorates. For these reasons, make sure that the concentration of antifreeze in the coolant is strictly within the permissible limits.
- Do not use coolant together with another brand of antifreeze.
Recommended coolant
