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Check frost
Requires this verification tool - a hydrometer.
A hydrometer is commercially related automotive products. Regularly, before the start of winter operation, based on security conditions, the antifreeze concentration must be checked, especially if clean water is sometimes added.
| PERFORMANCE ORDER | | 1. Warm up the engine in motion, until the upper radiator coolant hose will not be warm to the touch. | | 2. Carefully open the expansion tank cap. |
A warning  Do not open when the engine is hot.
|  | 3. Dial a coolant and a hydrometer to determine the density of the float on the coolant. In our latitudes, the liquid must not freeze at -25 ?° C, under extreme cold at -35 ?° C. |
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