Volvo Penta Green Coolant Concentrate, 1 Litre, Part Number 22567185Volvo Penta coolant gives vastly superior corrosion protection with special additives for aluminium protection. Suitable for both petrol and diesel engines. It also has good antifreeze properties.Volvo Penta Part No: 22567185Quantity: 1 Litre ConcentrateNote: Never mix with VCS yellow coolant. Your Volvo Penta was supplied with either green or VCS yellow coolant. They must never be mixed nor swapped over. Earlier variants of any Volvo Penta diesel are likely to use the green type. Later Volvo Penta diesel engines may have been supplied with VCS yellow coolant, and they should be kept on this type. Remember, your coolant should be changed every two years if green and up to 4 years if it's VCS yellow, and you should remove the heat exchanger at least every 5 years, if fitted, to clean it. The best way to replace the coolant is to use the ready-mixed version, as incorrect dilution can lead to overheating issues.