OPM 200 en-GB
45
©
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
10.6 US gallons in this example.
2.
The measured concentration of ethylene gly-
col is 35% by volume (freezing point -6°F).
According to the table there are 3.7 US gal-
lons of ethylene glycol in the cooling system.
3.
The required concentration of ethylene gly-
col is 45% by volume (freezing point -22°F).
According to the table, 4.8 US gallons of eth-
ylene glycol are required in the cooling sys-
tem.
4.
Since the cooling system already contains
3.7 US gallons, fill another 1.1 US gallons of
ethylene glycol in the cooling system (4.8 -
3.7 = 1.1 US gallons).
For calculation
Adequate protection against corrosion
Volume of ethylene glycol
(%)
20
25
30
35
40
45
50
60
Cooling system
volume (US gal-
lons)
Ice slush forms (°F)
21
16
10
-6
-11
-22
-36
-58
Volume of ethylene glycol
(US gallons)
1.3
1.6
2.1
2.9
3.2
3.7
4
4.8
7.9
1.6
2.1
2.6
3.7
4.2
4.8
5.3
6.3
10.6
2.1
2.6
3.4
4.8
5.3
6.1
6.6
7.9
13.2
2.4
3.2
4
5.5
6.3
7.1
7.9
9.5
15.9
2.9
3.7
4.8
6.6
7.4
8.5
9.2
11.1
18.5
3.2
4.2
5.3
7.4
8.5
9.5
10.6
12.7
21.1
3.7
4.8
6.1
8.5
9.5
10.8
11.9
14.3
23.8
4
5.3
6.6
9.2
10.6
11.9
13.2
15.9
26.4
4.5
5.8
7.4
10.3
11.6
13.2
14.5
17.4
29.1
4.8
6.3
7.9
11.1
12.7
14.3
15.9
19
31.7
5.3
6.9
8.7
12.2
13.7
15.6
17.2
20.6
34.3
5.5
7.4
9.2
12.9
14.8
16.6
18.5
22.2
37
6.1
7.9
10
14
15.9
18
19.8
23.8
39.6
6.3
8.5
10.6
14.8
16.9
19
21.1
25.4
42.3
6.9
9
11.4
15.9
18
20.3
22.5
26.9
44.9
7.1
9.5
11.9
16.6
19
21.4
23.8
28.5
47.6
7.7
10
12.7
17.7
20.1
22.7
25.1
30.1
50.2
7.9
10.6
13.2
18.5
21.1
23.8
26.4
31.7
52.8
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