Volvo Penta VCS Yellow Ready To Use Coolant, 5 Litres, Part Number 22567314

Volvo Penta Coolant VCS (yellow) contains new inhibitors that are adapted to the materials used in modern engines. VCS (yellow) offers improved protection against corrosion and the build-up of deposits. It helps counteracts cavitations and galvanic corrosion. The change interval is 4 years for VCS yellow coolant.

The Volvo Penta coolant VCS (Yellow) must not be mixed with Volvo Penta coolant (Green), nor be used in combination with a coolant filter.

Note: Never mix with VCS yellow coolant with green 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's may have been supplied with VCS yellow coolant, and they should be kept on this type. Remember, your coolant should be changed every four years and you should remove the heat exchanger at least every 5 years, if fitted to clean it. 

The best way to replace it is to use the ready-mixed version, as incorrect dilution can lead to overheating issues.

Background 
The continued improvement of new Volvo Penta engines with higher performance, more compact sizes and lighter materials raises the requirements for cooling and corrosion protection. Volvo Penta Coolant VCS is yellow and must not be mixed with green coolant. 

Kits for cleaning the cooling system: 
Cleaning kit part number 21467920 for general use in the event of problems with deposits or oil. It may only be used on engines filled with VCS (yellow). 

In cases where a change must be made from Volvo Penta Coolant (green) or equivalent to VCS (yellow), the cooling system must be cleaned using oxalic acid. 

Mixture proportions (freezing point) at: 
40% coolant and 60% water gives -24 °C (-11 °F) 
50% coolant and 50% water gives -37 °C (-34 °F)

Volvo Penta Part No: 22567314
Quantity: 5 Litre ready mixed