Anti–freezeAnti–freeze  - Engine coolant - Maintenance - Mitsubishi Carisma Owner's Manual - Mitsubishi Carisma

The engine coolant contains an ethylene glycol anti–corrosion agent. The cylinder head and water pump housing are cast aluminium alloy, and periodic changing of the engine coolant is necessary to prevent corrosion of these parts.

Use High–quality Ethylene–glycol includes coolant.

It has excellent protection against corrosion and rust formation of all metals including aluminium and can avoid clogs in the radiator, heater, cylinder head, engine block, etc.

Because of the necessity of this anti–corrosion agent, the coolant must not be replaced with plain water even in summer. The required concentration of anti–freeze differs depending on the expected ambient temperature.

CAUTION

(1) Do not use alcohol or methanol anti–freeze or any engine coolants mixed with alcohol or methanol anti–freeze. The use of an improper anti–freeze can cause the corrosion of the aluminium components.
(2) For effective anti–corrosion and anti–freeze performance, keep the anti–freeze concentration within the range of 45 to 60%. Concentrations exceeding 60% will result in a reduction of both the anti–freeze and cooling performance thus adversely affecting the engine.
(3) Do not top off with water only. Water by itself reduces the rust– protective and anti–freeze qualities of the coolant and has a lower boiling point. It can also cause damage to the cooling system if it should freeze. Do not use tapwater, or it could cause corrosion and rust formation.

During cold weather

If the temperatures in your area drop below freezing, there is the danger that the coolant in the engine or radiator could freeze and cause severe damage to the engine and/or radiator. Add a sufficient amount of anti– freeze to the coolant to prevent it from freezing.

The engine coolant mixture used at the factory provides protection against freezing for temperatures as low as approximately –30°C. The concentration should be checked before the start of cold weather and anti–freeze added to the system if necessary.

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