Where do you put antifreeze 2001 Mercedes ML 320?

DO NOT PUT ANY ANTIFREEZE IN YOUR MERCEDES. At the back of the engine compartment there is a plastic reservoir with a black cap. Check you owners manual please. Only the recommended antifreeze should be used. Many use Xerex G-05, available at Napa and maybe Pep Boys. Any other may shorten the life of your water pump and create excessive corrosion.