Cooling system Antifreeze and corrosion inhibitor con- centration table 35% by volume of 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 measured concentration of ethylene gly- col is 45% by volume (freezing point -30°C). According to the table, 18 litres of ethylene glycol are required in the cooling system. 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).
00:23-02 en-GB 21 © Scania CV AB 2016, Sweden Adequate protection against corrosion Volume of ethylene glycol (%) 35 40 45 50 60 Cooling system volume (litres) Ice slush forms (°C) -21 -24 -30 -38 -50 Volume of ethylene glycol (li- tres) 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