Engine Coolant (Diesel Engine Vehicles)

Adding Engine Coolant

If the coolant level has dropped to the MIN mark or below, add coolant and bring the level up to the MAX mark. Check the cooling system for signs of coolant leakage.

Use only genuine Honda All Season Antifreeze/Coolant Type 2. This coolant is a 50/50 mixture of green antifreeze and water.

Using non-recommended coolant may cause corrosion of many cooling system components made of aluminum alloy. Some antifreeze brands available on the market, despite manufacturers' claims that these products are neutral to aluminum, do not provide adequate corrosion protection for aluminum parts.

Do not remove the radiator filler cap while the engine is still hot. Doing so may cause severe scalding from hot coolant or steam.

Do not remove the radiator cap until the engine and radiator have cooled.

1. Make sure the engine and radiator have cooled down.

2. Loosen the reserve tank cap by turning it 1/8 turn counterclockwise. This will release the pressure in the engine cooling system.

3. Press down on the cap, turn it further counterclockwise, and remove the cap from the filler neck.

4. The coolant level in the radiator should be at the MAX mark. Add coolant if necessary.

Add coolant slowly and carefully to avoid spilling. Wipe up any spills immediately, as they may damage components in the engine compartment.

5. Reinstall the reserve tank cap and tighten it securely.

Do not add additional corrosion inhibitors or other additives to the coolant. These products may react with the coolant or be aggressive toward the materials used in engine components.