The cooling system should be filled with the recommended antifreeze and corrosion protection fluid, which is designed to last the life of the vehicle. Vehicles up to 2007 model year are filled with G12 Plus, and vehicles from 2008 model year are filled with G12 Plus Plus. Do not mix this antifreeze with any other type. If it is mixed with other types, it loses its ‘filled for life’ quality. The only exception is that models filled with G12 Plus can be topped-up with G12 Plus Plus, but not vice-versa.