You guys were right! This was a lot easier than I thought...and I didn't break any parts! I didn't have a manual on hand, so I had to dismantle carefully. This really is a great forum!
Anyway, The radiator is in. Now I need to know, can I use an off-the-shelf product like Prestone, or should I go to the dealership and buy the MB brand?
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car