Hi, I have a W210 300 Turbodiesel and I noticed the torque converter housing is covered in oil, but I can't tell if it's ATF or engine oil.
I can't see any leaks from the valve cover gasket, and the oil filter housing looks dry.
Someone told me it could be a problem with the transmission oil pump, but it doesn't make any strange noises and seems to be working fine. Any ideas on what else I should look for?