OPM 260 en-GB
43
©
Scania CV AB 2021, Sweden
Cooling system
Antifreeze and corrosion protection
concentration table, litres
35% by volume of Scania antifreeze provides
sufficient corrosion protection.
Example:
•
The total volume of the cooling system is 40
litres.
•
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.
•
The required concentration of ethylene glycol
is 45 per cent by volume (freezing point -
30°C). According to the table, 18 litres of eth
-
ylene glycol are required in the cooling sys
-
tem.
•
Since there are already 14 litres in the cooling
system, 4 litres of ethylene glycol must be
added to the cooling system (18 - 14 =
4 litres).
Adequate corrosion protection
Volume of ethylene glycol (%)
35
40
45
50
60
Cooling system volume
Ice slush forms (°C)
-21
-24
-30
-38
-50
(litres)
Volume of ethylene glycol (litres)
11
12
14
15
18
30
14
16
18
20
24
40
18
20
23
25
30
50
21
24
27
30
36
60
25
28
32
35
42
70
28
32
36
40
48
80
32
36
41
45
54
90
35
40
45
50
60
100
39
44
50
55
66
110
42
48
54
60
72
120
46
52
59
65
78
130
49
56
63
70
84
140
53
60
68
75
90
150
56
64
72
80
96
160
60
68
77
85
102
170
63
72
81
90
108
180
67
76
86
95
114
190
70
80
90
100
120
200
