RPM55, Good Morning to you, too, sir. Thank you for your comments/feedback. I appreciated it. Yes, I have considered taking the car to a shop and letting them diagnose this oil leak. I think, considering the checklist, it would be best to send the Mercedes to a shop where the mechanic can check out the issues. Due to my limited resources, it would be much easier to locate the problems areas using a lift instead of the restrictive nature of the ramps I have. Again, thank you for your comments/feedback.

That's it.

I checked the front main seal behind the front black cover using the dye I put in the oil crankcase. No sign of any leak anywhere on the front area.

I also made an appointment with a mechanic who has a lift to check out locations of the oil leak on March 15th. I will then report my findings afterwards. Stay tuned.

I received an email from the shop that was going to do the oil leaks issues as well as other things on the updated checklist. I was informed that the owner had stated that he will not be able to work on my Mercedes. No reason or explanation given as to why he declined to diagnose the oil leaks among other issues as well.

I am tempted to do this work on my own. The problem is trying to find and locating the source and location of the oil leaks. Even though, I already tried the oil dye and using the UV led flash light to pinpoint oil leaks location, I got mixed results and not clearly finding the source and location of the oil leaks. So I ordered a 5M 7mm Endoscope Waterproof Snake Borescope USB Inspection Camera that can connect to my laptop and I could put the camera under the Mercedes while running and hopefully will show some area of the leaks as well as the source of burning and smoking oil. I will follow-up/update on this as soon as I get the camera.

Weird that they won't work on your car after agreeing to make an appointment to do so...

Before you start looking for the leak, get some good degreaser and spray the entire engine down. Let it soak for a while and wash it off. Repeat as many times as you have to go get the thing SPOTLESS.

Start and run the car until oil starts to appear. Start up high and work your way down. The highest leaks (likely valve cover) are going to be your biggest suspects. To get on the exhaust manifold, the oil has to come from above, not below. Getting under the car is wasting time, you need to find the source, not the accumulation.

Still leaking oil
 

See the last post titled " Valve cover bolts will not tighten on the head." That is another issue related to this "Smoking, burning, leaking oil behind and under the rear motor issues with pictures post". I don't want repeat myself to avoid confusion.