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#1
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Engine Oil Spec from MB 617 Engine is Very Liberal.......
On my 1979 300SD I see that the original as designed specification from Mercedes Benz for Engine Oil Consumption is:
262 Miles per US Qt This is 3.82 qts per 1000 Miles. This appears very liberal. Interpretations and comments welcomed???? Most engines do way better than this but why did MB find it necessary to publish this number in their FSM without any footnotes or qualifications...... Say a nice lady bought a new car back in 1979 and it consumed that amount there would be a creamed engine in no time flat. She would never think of checking her oil that frequently???
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Dionysius |
#2
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It gives them a lot more latitude in dealing with warranty claims.
It's the same argument I have about "excessive" timing chain stretch, with offset keys allowing correction of 10 degrees of stretch. I think 10 degrees is excessive, but MB would rather put it off until it's out of warranty.
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1987 W201 190D |
#3
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That doesn't sound right......the car would have never come close to meeting emission standards with consumption like that.
None of the 617's I've seen, service, or own, use even a quart between 4,000 mile changes. Two of them use nearly none, and my SD and my dad's '83SD use about 3/4 of a quart per 4k.
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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) |
#4
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They donot say burn, do they ?
They meant it will burn or leak that much oil.
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2010 ML350 Bluetec 2012 Mustang Convertible |
#5
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I think they ment it will burn that amount of oil during engine break in period...correct me of i am wrong.
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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 |
#6
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Where again did you see this information?
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42 |
#7
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I will repeat......
It is in the Factory Service Manual for Model 116.120 (300 SD). Look at Section 00-020 Page 16 named 'Technical Data'. This is it verbatim: "Engine Oil Consumption ltr./100km (miles/US qt.) 0.25 (262)"
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Dionysius |
#8
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If this is correct, the 350k engine I picked up cheap and put in my car last year (now has 370k+ on it) lovingly named Valdez 2 by my mechanic friend who sold it to me, is still in spec!
Let me put it this way, its name has meaning behind it! but it does run really strong! and I'm slowly patching its leaks.
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1983 Toyota Tercel 4WD Wagon - 1984 Mercedes-Benz 300SD 4-Speed(My Car!) 2005 C230 Kompressor 6-Speed Manual
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#9
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262 miles is not liberal enough, its 235mi/qt.
From the FSM 040/4 on the 617.952: I agree the spec is there to reduce warranty costs. Even MB's current engines allow a very high oil consumption rate, especially during break-in. My 240's engine uses less than 1qt/2000mi. |
#10
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Haha ebayers read this and think you mean miles per quart of fuel oil
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$60 OM617 Blank Exhaust Flanges $110 OM606 Blank Exhaust Flanges No merc at the moment |
#11
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Inside the psyche of MB..........
The argument that it is there because of warranty holds no water because there never is a compelling reason for MB to quote these specs. They could have remained silent on this spec. It does risk them losing some credibility.....but then again they always greatly surpassed the silly number. If it is for CYA I do not believe they would stiff a new owner by saying....see, we are within spec. MB was a very serious Company prior to Chrysler at any rate. I only know them up to that.
Do we have any Psychologist/Psychiatrist on board here??? There is some pathology worth pursuing............
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Dionysius |
#12
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Quote:
However considering these specs were done some 25 years ago i wonder? Does MB even have they're own engine oil? I dont have my manual handy but doesnt it just specifiy SD/CD or something with wide ranging visc. like vw's of the era?
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2004 Infiniti G35 3.5L 6mt Coupe 73K miles 25.6mpg ytd 2001 Green Audi TT 225 AWD Roadster 71K 6sp 30.9mpg >>STOLEN<< 1982 300D Turbo 231K 120hp? 28.1mpg YTD |
#13
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oil loss due to evaporation
One thing people forget is that part of the new oil evaporates when heated, light ends and breakdown and evaporation losses, it is measured by ASTM method D5800 or Noaak test and it amounts to on average ~10% mass loss or ~ 11% volume loss and it can be as high as 15 % depending on oil viscosity and whether synthetic or mineral. Light weight mineral oil having the highest % loss. This is not burning or leaking.
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2010 ML350 Bluetec 2012 Mustang Convertible |
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