Antifreeze G13 Antifreeze from the company Mannol in a 1lt package. It is a G13 antifreeze, manufactured with organic additive technology resulting in lower CO2 emissions. It is ready to use, so it does not need to be diluted before placing it in your vehicle. Its color is green, indicating the composition used to prevent engine corrosion. You should consult the manufacturer's manual for the color of the antifreeze you will choose.