I have a 1985 300td and my mercedes guru told me that it looks like my oil loss is coming from my head gasket. Can this be true? I recently read that if you use green coolant in these alumimum cases that it can cause the connection of head to lose oil. I need some help...I thought it might be a valve cover gasket but I am pretty sure he said head gasket

 

Is the oil leaking to the outside or is it going through the engine? If it is leaking to the outside, clean the engine off, and run it a while. Then look for the leak. Look at the highest point and see if it is leaking from there BEFORE you blame anything lower down. Oil can run along ridges and bumps in castings you never thought possible. Look from the top down, where you find the oil is the approximate location of the leak

 

You're absolutely right Sorry I failed to mention that. I might also mention that coolant could be going into the crank case, although the complaint was oil loss and not coolant loss I think it worth mentioning. I've seen the coolant leak and cook off before it had a chance to mix with the oil. Makes it hard to find. Look for the milkshake at the top of the valve cover. As far as wetness in the tailpipe, in hot weather yes, in cold weather it could simply be condensation. Sounds pretty bad, but the taste test would confirm which one

 

If the leak is betwen a coolant passage and a drain-back passage the coolant goes straight into the crankcase along with the oil that is draining back to the crankcase.