Coolants cannot be mixed.
Volvo Penta 5 litre Green Coolant Ready Mixed and ready to pour. Leisure craft engines are often subject to greater wear than other engines. Leisure craft are frequently run intensively for short periods and then laid up for long periods. It is therefore especially important to chose the coolant for marine applications.
Green coolant is for older Volvo Penta engines and different colours of coolant cannot be mixed so please ensure you order the correct colour.