24
Note
: When the percentage of the glycol is above 68%, its freezing point rises. So
the percentage of the glycol should not be above 68% when you make up anti-freezer.
Glycol is a transparent, viscid, poisonous liquid. Wash your skin with water immediately if
it contacts your skin. Glycol is flammable. So, do not weld or light fire when there is
coolant leakage.
When there is an emergency, anti-freeze can be replaced by soft water, such as tap
water and rain water. If well water, spring water or other hard water is used, add 2g
tri-sodium phosphate per liter water in order to soften the liquid. If hard water is not
softened before using as a coolant, there will be scale on the wall of water jackets of
diesel engine, and the deposit will weaken cooling effect and cause the engine to
overheat.
Preparations before starting the diesel engine
To make sure that the engine would run properly, the following steps should be
done before starting the engine every time.
1
．
Check the oil level in the oil sump. The level should be within the upper and lower
scale limits of the oil gauge. If the oil volume is not enough, add some oil as required.
2
．
Check the diesel fuel level in the fuel tank, add some fuel if necessary.
Glycol percentage
Density of glycol-water g/cm3
Freezing point
℃
28
1
．
034
-10
38
1
．
050
-20
48
1
．
063
-30
55
1
．
072
-40
60
1
．
078
-50
68
1
．
087
-68