h_shek,

If an injector was leaking, you would have clean oil around it. Black oil sounds like engine lubrication oil and would be leaking from someplace else.

To replace the injectors just because the car is a 1992 is a poor idea. Does the engine run OK? If so, the injectors are OK. If you are really worried about the injectors, have them tested at a Diesel injection shop.

If you didn't find the oil leak, would you even think about replacing the injectors? You sound like you don't know much about MB engines so maybe you should let your mechanic do the diagnosis.

I have '79 and '80 MB Diesel cars and I wouldn't think of replacing the injectors on a whim or an oil leak. IF IT AIN'T BROKE, DON'T FIX IT.

Investigate the oil leak. It may be just a leak in the valve cover gasket.

P E H