On the 99 E300D I picked up this past summer, I noticed the oil level dropping slightly. 159k miles, M1 0w40 Euro. Asked the PO what he observed and he said that, from the time he bought the car at 33k, the oil would near the minimum mark at about 7k miles, at which time he would add a quart. Did oil changes every 10k.

Have others of you seen this kind of oil consumption on the 606?

On my 98 with 86k miles I observe absolutely no oil consumption.

I'll be using M1 5w40 going forward (in part due to my ready-for-the-Apocalypse supply of the stuff)....wonder what effect that might have on consumption.

So my son has put 7500 trouble-free miles on the car in just over three months....at this rate he'll put 26k miles a year on the car!

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Not specific to your Vehicle but from what I have read People who drive their Vehicles locally had no Oil level issues till they went on a long trip on the Freeway/Expressway.

Apparently hours on the Freeway/Expressway consume Oil Faster.

A few People have calimed when the little O-ring in the Fuel Supply/Lift Pump gets bad enough it sucks Oil from the Fuel Injection Pump. Since the Oil Fuel is Injected it burns well and is not noticed except for the Oil comsumption issue.

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84 300D, 82 Volvo 244Gl Diesel

In this thread I speculated that the discolored Fuel could be from a bad Liift Pump O-ring.
I have Nailing and discolored Diesel Fuel?

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84 300D, 82 Volvo 244Gl Diesel

Well my son is certainly logging lots of highway miles so that would make sense.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

My experience is with a 606 N/A 330k miles.

At about 300k the engine suddenly started using more oil than was normal for it. When I replaced all of the CCV fittings and hoses, except the puck, the oil use returned to normal.

I wouldn't know what 7k looked like, I change around 4k (+/- 1k).

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Greg
2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO

X2 I would normally change the oil at 3500 which may be too often, but I look at it as being cheap insurance.

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96 E300d

I know from oil analysis that I can easily do 10-12k drain intervals....the FSS would have me go 17k, but I won't do that.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

As much blow by as my car has, judging from the mess coming from small leaks in the post turbo intake system, I would think that mine would have a significant loss but it never seems to go down.

This gives me a little cause for concern because it makes me think something else is taking the place of the missing oil like fuel perhaps.

I really need to get the oil analyzed some time.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

I've only had to change the oil once in my 98 E300 but it looks like it may require a quart of oil between 10k oil changes on Mobil 1 turbodiesel oil or whatever it is called these days.

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Jim

My NA 606 (with 411,000 miles on it) uses ZERO oil.

My 1998 turbo 606 has used no oil during the roughly 4,000+ miles I've put on her so far.

It would seem that any significant *internal* oil consumption on a 606 is an anomaly. They are just incredibly stout and long-lived engines.

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Current rolling stock:
2001 E55 183,000+ Newest member of the fleet.
2002 E320 83,000 - The "cream-puff"!
1992 500E 217,000+
1995 E300D 412,000+
1998 E300D 155,000+
2001 E320 227,000+
2001 E320 Wagon, 177,000+

Prior MBZ’s:
1952 220 Cab A
1966 300SE
1971 280SE
1973 350SLC (euro)
1980 450SLC
1980 450SLC (#2)
1978 450SLC 5.0
1984 300D ~243,000 & fondly remembered
1993 500E - sorely missed.
1975 VW Scirocco w/ slightly de-tuned Super-Vee engine - Sold after 30+ years.

I changed oil at 16k miles, basically twice a year. M1 0W/40 European Blend/factory fill. Typically added 1 qt after 8k miles. Tested it once, lab said I could extend the interval out further. Chose not to.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Almost no oil use on mine in town - sometimes a little on a highway trip. I change it at 10,000 miles even though oil analysis says I can go farther. Every 10k is a good number for me to remind me to do an A/B service.

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Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles

1995 E300 with 430K. I don't think it burns any. Just leaks some..... Maybe 1/3 - 1/2 quart in 3-4K.

Rgds,
Chris W.

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Objects in closer are mirror than they appear.

I might lose 1/4 a quart between changes on my 98 E300.

I use the Mobil 1 Formula M ESP 5W-40 as called for in the latest MB fluid sheet.

I go by the FSS, when it gets down to ~1500 I find time to do the oil change.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

I believe the trick on the 606 is to never fill it completely. I usually leave it 1/2 way between the full and add oil mark. Often I do not have to add before a change. Over 200K on the engine.

KarTek I had the same symptoms when I first purchased mine and ran a can of KANO Kreen through it for a week of very light driving just before an oil change, I would say it nearly eliminated the concern,

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1999 Mercedes E300TD daily driver sold at 238K miles 106K miles were mine, rust worm got it :-(
2006 Mercedes CDI new daily driver! 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. March 2024 135,250