Engine coolantEngine coolant  - Maintenance - Mitsubishi ASX Owner's Manual - Mitsubishi ASX

To check the coolant level

A transparent coolant reserve tank (A) is located in the engine compartment.

The coolant level in this tank should be kept between the “LOW” and “FULL” marks when measured while the engine is cold.

To add coolant

To add coolant

Petrol-powered vehicles

The cooling system is a closed system and normally the loss of coolant should be very slight. A noticeable drop in the coolant level could indicate leakage.

If this occurs, we recommend you to have the system checked as soon as possible.

If the level should drop below the “LOW” level on the reserve tank, open the lid and add coolant.

Also, if the reserve tank is completely empty, remove the radiator cap (B) and add coolant until the level reaches the filler neck.

• Do not open the radiator cap (B) while the engine is hot. The coolant system WARNING

• Do not open the radiator cap (B) while the engine is hot. The coolant system is under pressure and any hot coolant escaping could cause severe burns.

Diesel-powered vehicles

The cooling system is a closed system and normally the loss of coolant should be very slight. A noticeable drop in the coolant level could indicate leakage.

If this occurs, we recommend you to have the system checked as soon as possible.

If the level should drop below the “LOW” level on the reserve tank, open the lid and add coolant.

• Do not open the reserve tank cap (C) while the engine is hot. The coolant WARNING

• Do not open the reserve tank cap (C) while the engine is hot. The coolant system is under pressure and any hot coolant escaping could cause severe burns.

Anti-freeze

The engine coolant contains an ethylene glycol anticorrosion agent. Some parts of the engine are cast aluminium alloy, and periodic changing of the engine coolant is necessary to prevent corrosion of these parts.

Use “DIA QUEEN SUPER LONG LIFE COOLANT PREMIUM” or equivalent*.

*: similar high quality ethylene glycol based nonsilicate, nonamine, non-nitrate and non-borate coolant with long life hybrid organic acid technology MITSUBISHI Genuine Coolant has excellent protection against corrosion and rust formation of all metals including aluminium and can avoid blockages 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.

Above -35 °C: 50 % concentration of anti-freeze
Below -35 °C: 60 % concentration of anti-freeze

• Do not use alcohol or methanol antifreeze or any engine coolants mixed with CAUTION

• Do not use alcohol or methanol antifreeze or any engine coolants mixed with alcohol or methanol anti-freeze. The use of an improper anti-freeze can cause corrosion of the aluminium components.

• Do not use water to adjust the concentration of coolant.

• Concentrations exceeding 60 % will result in a reduction of both the anti-freeze and cooling performance thus adversely affecting the engine.

• Do not top up 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, as it can 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 concentration should be checked before the start of cold weather and anti-freeze added to the system if necessary.

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