So I have a few oil leaks, one being the valve cover and potentially the chain tension bolt (both of which I am planning to re seal). But I have another one under the turbo, I noticed it due to oil against the engine dampener material beside the turbo. Any ideas as to the source of this leak?

I am purchasing gaskets this week to do the valve cover and want to throw as much as I can on this order to save on shipping etc.

Just bet it is the oil drain line, like mine! Mine was at the turbocharger fitting on the underside. You should feel wetness, or you can get out your 13mm wrench and see about staining.

If not, found L.A.'s Awesome is an inexpensive cleaner, especially how well it cleans and how versatile. Spray on and rinse off the schmutz. That way if you don't find the leak(s) can clear the schumtz and see the new oil.

Hope this helps!

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Current fleet:

1985 Mercedes-Benz 280TE - Waiting for heart surgery.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016 and now looking for a new home.

1979 Mercedes-Benz 300TD - Parted out.

1964 Volkswgen Beetle - Vater's since September 1968 and undergoing a restoration.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Vacationing with her caretaker until he is in better health.

If this is a 617.952 Engine and it has a Tube for the Oil Seperator in the Air Filter Housing that goes down behind the Turbo Drain Tube there is a single attachement point for the Tub where it runs behind and under the Bracket under the Turbo charter. It is not unknown for the Weld to crack on the Tab welded to the Tube that the little Bolt goes through to crack off and leave a hole in the Tube.

Or the Bolt simply becomes loose and the Tube move around and the little O-ring at the Bottom will not seal it.

I also agree that it is much easier to find an Oil leak after everthing is cleaned off.

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84 300D, 82 Volvo 244Gl Diesel

it is the 603. so not as likely it is line related but I have yet to fully investigate. Just hoping for some direction as to where to look first!
But it is coming out at some a good velocity as it sprays the dampening wall, and doesn't drip.

Good golly! That doesn't read as a good design! I have used commercial J.B. Weld to patch high pressure hole and still holding, per Tram's recommendation.

Glad to be of some use!

603, that changes things a little!

Hmmm, where is the oil feed line? I would consider that if I was in your situation.

Hope this helps!

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Current fleet:

1985 Mercedes-Benz 280TE - Waiting for heart surgery.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016 and now looking for a new home.

1979 Mercedes-Benz 300TD - Parted out.

1964 Volkswgen Beetle - Vater's since September 1968 and undergoing a restoration.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Vacationing with her caretaker until he is in better health.

There is an oil feed line from the engine to the bottom of the turbo. It is held by 2 bolts and a gasket. If oil is gushing out then it is likely to be the problem. The line runs from the back of the engine block, bolted to one of the turbo bracket and attached to the bottom of the turbo. You do not need to remove the turbo to fix that. It is not too difficult to replace the gasket, probably 3 out of 10. I suspect the bolt(s) came loose.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

What are the miles on it, and how about a few pics before, after, and as you dismantle it?

No sense in jumping to conclusions, is why I ask.

it is a 1987 milage in the 400,000km range ( the dash was replaced and the odometer is no longer working, one of the very few things that doesn't work)


No pictures but a turbo gasket is already in my check out cart, so I will check there in the day light, and there really wont be much dismantling if its just a few loose bolts.

Mine leaks all over too, could be a bad oring from the oil seperator, but my tube itself is clean leading down. On mine it seems to be the oil that pools in the filter housing from the oil seperator, or well, from the blowby condensating inside the housing and then pooling at the lowest point which is near a little drain hole, once the oil builds up enough it starts coming out of the drain hole.

I also had oil leaking from the seal that leads from the big seal at the U-Tube where it connects to the turbo. My seal was hard and old. Got a new Mercedes one, works great less than $10.

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1987 300E

I got in there today, and it looks be coming from the oil separator line as well as the from the gasket by the air intake. I will have to get one from another source as it was not available on this site (or any other one), but the apparent look of the issue was compounded by a rotten coolant line which is doing the spraying, and mixing with the oil in the area to look like a big oil leak. I had to do a double take on the stuff. Plus, some grim from the recently deleted emissions system.

On another note, as I wait on a valve cover gasket I tightened the cover considerably.... as it was quite loose. This should slow down that oil leak until it can be fixed properly.

The valve cover should just be lightly hand snug with a 1/4 inch ratchet. Not too tight, just snuged down until it firms up.

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1987 300E

Seal Ring - Hose from Air Cleaner To Turbocharger should only cost $15 or $20 at the dealership in Victoria. Just my bottom one needed replacement. You might want to take yours off and see if it's still soft or not, maybe it just wasn't snug enough. Don't crack your Plastic tube by making it too tight.

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1987 300E

yup as it is now to manual specifications, they were loose enough I could turn a few of them with my fingers.

Haha yeah some people and techs are so scared to break anything aluminum they just leave things actually loose.

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1987 300E