Cooling system
OPM 250 en-GB 46
© Scania CV AB 2022, Sweden
Antifreeze and corrosion protection
concentration table, US gallons
35% by volume of antifreeze provides sufficient
corrosion protection.
Example:
• The total volume of the cooling system is
10.6 US gallons.
• 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.
• The required concentration of ethylene glycol
is 45 per cent by volume (freezing point -
22°F). According to the table, 4.8 US gallons
of ethylene glycol are required in the cooling
system.
• 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 = 1.1USgallons).
Adequate corrosion protection
Volume of ethylene glycol (%) 35 40 45 50 60 Cooling system volume
Ice slush forms (°F) -6 -11 -22 -36 -58 (US gallons)
Volume of ethylene glycol (US gal-
lons)
2.9 3.2 3.7 4 4.8 7.9
3.7 4.2 4.8 5.3 6.3 10.6
4.8 5.3 6.1 6.6 7.9 13.2
5.5 6.3 7.1 7.9 9.5 15.9
6.6 7.4 8.5 9.2 11.1 18.5
7.4 8.5 9.5 10.6 12.7 21.1
8.5 9.5 10.8 11.9 14.3 23.8
9.2 10.6 11.9 13.2 15.9 26.4
10.3 11.6 13.2 14.5 17.4 29.1
11.1 12.7 14.3 15.9 19 31.7
12.2 13.7 15.6 17.2 20.6 34.3
12.9 14.8 16.6 18.5 22.2 37
14 15.9 18 19.8 23.8 39.6
14.8 16.9 19 21.1 25.4 42.3
15.9 18 20.3 22.5 26.9 44.9
16.6 19 21.4 23.8 28.5 47.6
17.7 20.1 22.7 25.1 30.1 50.2
18.5 21.1 23.8 26.4 31.7 52.8
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