Never jeopardize safety and performance or risk expensive repairs by fitting a non Genuine Volvo Penta part or using non Volvo trained service personnel.
Genuine Volvo Penta Coolant is made to exacting standards to withstand the harsh salt water environment in which marine diesel and petrol engines operate. Some websites claim that their non OEM coolant meets or exceed the quality of a Volvo Penta genuine coolant. This is clearly not the case. They are always inferior and in some cases dangerous to your engine.
Volvo Penta produce 2 types of coolant, either green or VCS yellow. Please note that only modern D series diesels and petrol engines marked with a VCS sticker should use the yellow type. Some new Volvo Penta's may have been comissioned using green coolant, and if this is the case, do not then try to switch to yellow without adhering to the cleaning method, to prevent gelling of the coolant. Do not try to use VCS coolant in any older diesel, such as a MD2002, MD2040, KAD or TAMD series or other older engine. All models up to about 2004 should only use the green type, and preferably, the ready mixed option to prevent incorrect dilution and thus overheating issues.
Only use Genuine OEM Volvo Penta Coolant in your engine to ensure the safety of you and your family out at sea.