I have a 93 300sd with 215,000 miles on the odometer.I recently took a trip,about 1900 miles,the car used 10qts of oil.Is it possible that the oil return line from the turbo to the oil pan is restricted causing the turbo to blow oil into the intake?I recently had the connecting pipe from the turbo to the intake off and there was an oily build-up inside it and the intake.I have not noticed an abnormal amount of smoke out the tailpipe and there are no major leaks under the hood or the car.The PO said he had a rebuilt turbo installed prior to selling the car,it looks more like used to me.Also is it possible to replace the rings without removing the engine from the car?Thought about rings,rod bearings,and valve seals,but don't want to pull the engine if we can get around it.

1 qt in 190 miles... you may not have seen smoke, but the drivers behind you certainly did! It could be a bad turbo (or restricted drain line). More likely than worn rings, IMO.

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1987 W201 190D

Is it a rod bender,wearing ovals into block.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

Ooops, you've been had. Classic symptom of the 3.5L rod bender. New short block will fix this problem. Better jimmy open that wallet.

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles

Yep, rod bender strikes again.....time for a motor swap.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

You should consider a engine from a 300D or 300SDL from 1987 to 1989, slightly cheaper and no more bend rod...

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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi

More like 86-87. No 603 offered in the US in 88-89. 3.5 started in 90.

Sixto
87 300D

No way around it, your engine block is scrap metal.

from the sounds of things this is a common problem on these particular engines.what about a sleeve or two and some new rods?would this be a cheaper option?what causes this and is it a mileage related problem,or possibly the treatment of it?

This is not mileage or maintenance related. The engine basically self destruct from day one, the cylinder becomes oval shape and hence the oil consumption. MBZ re-bore the cylinder from 3.0L to 3.5L and they screwed up but never admitted it. I think MBZ replace it with a stronger rod and it helps.

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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.