3.9.1. Coolant pressure cap Check the pressure valve opening pressure using a expansion tank cap tester. Replace the filler cap assembly if the measured valve does not reach the specified limit. (pressure Rediater Cap valve opening pressure : 0.9 kg/cm 2 ) Note : Because it is dangerous to open the pressure cap quickly when Rediater coolant is hot, after lowering the slow-opening at first open it fully. inside pressure of the tank by EA5O3002 3.9.2. Anti-freeze The anti-freeze, 50% of the whole coolant, is always to be used to prevent the cooling system from the corrosion.
And in winter the amount of anti-freeze shown in the following table should be used in accordance with the ambient temperature. As the individual freezing points corresponding to the proportions of antifreeze in the table are subject to change slightly according to the kind of antifreeze, you must follow the specifications provided by the antifreeze manufacturer. As the ratio of antifreeze in the mixture decrease each time new coolant is added to make up for the loss coolant resulting from engine operation, Check the mix ratio with every replenishment of coolant, and top up as necessary.
- 22 - Ambient Temperature (˚C) Cooling water (%) Anti-freeze (%) Over -10 85 15 -10 80 20 -15 73 27 -20 67 33 -25 60 40 -30 56 44 -40 50 50