OPM 200 en-GB
44
©
Scania CV AB 2014, Sweden
Cooling system
Antifreeze and corrosion inhibitor con-
centration table
35% by volume of Scania antifreeze provides
sufficient protection against corrosion.
Example:
1.
The total volume of the cooling system is 40
litres in this example.
2.
The measured concentration of ethylene gly-
col is 35% by volume (freezing point -21
°C). According to the table there are 14 litres
of ethylene glycol in the cooling system.
3.
The required concentration of ethylene gly-
col is 45% by volume (freezing point -30
°C). According to the table, 18 litres of eth-
ylene glycol are required in the cooling sys-
tem.
4.
Since there are already 14 litres in the cool-
ing system, 4 litres of ethylene glycol must
be added to the cooling system (18 - 14 = 4
litres).
For calculation
Adequate protection against corrosion
Volume of ethylene glycol
(%)
20
25
30
35
40
45
50
60
Cooling system
volume (litres)
Ice slush forms (°C)
-6
-9
-12
-21
-24
-30
-38
-50
Volume of ethylene glycol (li-
tres)
5
6
8
11
12
14
15
18
30
6
8
10
14
16
18
20
24
40
8
10
13
18
20
23
25
30
50
9
12
15
21
24
27
30
36
60
11
14
18
25
28
32
35
42
70
12
16
20
28
32
36
40
48
80
14
18
23
32
36
41
45
54
90
15
20
25
35
40
45
50
60
100
17
22
28
39
44
50
55
66
110
18
24
30
42
48
54
60
72
120
20
26
33
46
52
59
65
78
130
21
28
35
49
56
63
70
84
140
23
30
38
53
60
68
75
90
150
24
32
40
56
64
72
80
96
160
26
34
43
60
68
77
85
102
170
27
36
45
63
72
81
90
108
180
29
38
48
67
76
86
95
114
190
30
40
50
70
80
90
100
120
200
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