Made a few searches about this topic. Found some useful info.
Main questions after lots of reading:
1. Changing the oil is the same as any car. Drain, change oil filter cartridge, refill, check quantity.
Q: Where is the engine oil filter? Is it the black housing directly below the front engine snapped on cover, has the MB and V6 logos on it?
2. Owner's manual calls to have 8.5 US quarts.
Q: Seriously??!! Don't want this to be a stupid question but every owner's manual I've had shows the quantity it takes to get a correct reading...Is this the amount to be added to get a correct fill after draining the engine oil? I thought having a small V6 wouldn't require more than 6 quarts of oil to get a correct fill. My 4.6 liter 281 cubic inch engine doesn't even take that much nor does my 5.4L!
3. I read the Factory Approved Service Products and saw the different oils/weights that can be used on this engine.
Q: What type of oil do you guys use? fyi my car only has 23k miles on it.