I think the topic of what to do with the antifreeze is up to the user, and research should be done on their own...
I did a little digging, and mostly what I could find was SHOPS and GOVERNMENT agencies should not dump antifreeze into the ground/sewer and they should recycle their antifreeze.
shops that deal with radiators should have a recycler on hand...

individuals wanting to dispose of quantities of antifreeze should take it to a radiator shop for recycling. I could not find any ruling by the epa concerning individuals...

enough on this topic please. back to the original topic of what the MERCEDES DIESEL should have in it.

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!