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2. How to use anti-freeze solution correctly?
1) Wash the cooling system thoroughly before filling anti-freeze solution.
If you fill the anti-freeze solution without a thorough cleaning, the anti-rust performance
will be weakened. Following these steps to wash it: (1) Start engine, when the coolant
gets to the thermostat threshold temperature, stop the engine, then drain the coolant. (2)
Use 10% caustic soda solution as coolant and make the engine run 5 minutes at high
speed, let it drench for one hour, then drain it. (3) Add soft water, make the engine
running at high speed for 10 minutes, and then drain the water. Repeat this step for
several times till there is no pollutant out of the drained water.
2) Before filling anti-freeze solution, don’t forget to check if the cooling system has any
seeping points. Remove any seeping then add anti-freeze solution. Ethanediol's surface
tension is low; it may easily seep through the crevices. Therefore, before you change
anti-freeze solution, you should first check and fasten the branches and fittings of
cooling system,to prevent any leakage.
3) Anti-freeze solution’s expansibility is greater than that of water, if there is no
expansion tank, you should only fill up the anti-freezing liquid to 95% of the cooling
system’s volume.
4) Prohibit direct filling up anti-freeze mother liquid (condensed type), prohibit
modulating anti-freezing liquid with hard water.
5) Regularly check anti-freeze solution in use.
After a period of use, the anti-freeze solution will become deficient, here, first check
the density of the anti-freeze solution. If the density doesn't increase, then this
deficiency should be caused by seeping, you have to add anti-freeze solution of the
same brand; if the density decreases, you should add condensed anti-freeze solution
of the same brand; if the density decreases, this should be caused by water
