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  #1  
Old 06-03-2007, 01:40 PM
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92 300CE -eats oil, 50 miles per quart

Hi everyone,
My baby just developed a appetite for motor oil recently. No leaks, just a faint smell of burnt oil occasionally while motoring.
Any advice on where and how to look for the problem is greatly appreciated.

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  #2  
Old 06-03-2007, 01:48 PM
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Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,538
Do a search for valve guides and / or valve seals.
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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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  #3  
Old 06-09-2007, 09:20 PM
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Valve guide seals on my 88 ( M103 engine ) not sure what is in a 92
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  #4  
Old 06-09-2007, 09:54 PM
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Quote:
Originally Posted by poway View Post
Hi everyone,
My baby just developed a appetite for motor oil recently. No leaks, just a faint smell of burnt oil occasionally while motoring.
Any advice on where and how to look for the problem is greatly appreciated.
The suggestions here make sense.

Two more questions:

1. How many miles in the engine?

2. Have you recently changed motor oil weight/brand?

3. What kind/weight motor oil do you currently use?

(OK 3 questions. )
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1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
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  #5  
Old 06-09-2007, 10:28 PM
Texholdem
 
Join Date: Mar 2007
Location: Dallas
Posts: 756
And I thought, my oil consumption of 1 quart per 1,500 miles is bad but 50 miles per quart? the car must use oil instead of gas? If you don't use any gas then it is a good 200 mpg car, 4x better than a Toyota Prius with the annoyance of more frequent fill-ups
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1996 E320 since 1/16/08, 171K miles as of Feb 2011

---------------------------------------------------------
1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE
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  #6  
Old 06-09-2007, 11:43 PM
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Tex, Enrique told me that 1 qt of oil per 2k miles is OK.

What weight oil are you using?

I use 20-50, which is what the manual says to use.

My 300CE uses a little less than 1 qt per 2k miles.

The 300TE with the M103 engine and over 210k on the clock uses less than 1 qt of oil between oil changes (3k to 3.5k miles).
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Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

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Not in this weather!
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  #7  
Old 06-09-2007, 11:50 PM
Texholdem
 
Join Date: Mar 2007
Location: Dallas
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I just had the oil changed a week ago, 3K miles after the last one. According to the bill they at Firestone used Kendall GT1 10W30 full synthetic, I trusted them to have it right, now I need to check the manual.
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1996 E320 since 1/16/08, 171K miles as of Feb 2011

---------------------------------------------------------
1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE
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  #8  
Old 06-10-2007, 12:11 AM
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Quote:
Originally Posted by Texholdem View Post
I just had the oil changed a week ago, 3K miles after the last one. According to the bill they at Firestone used Kendall GT1 10W30 full synthetic, I trusted them to have it right, now I need to check the manual.
My manual says 20-50w for the temp range that my 300CE would encounter in California. I would imagine that in your particular situation the temp range (weather) would not be too different from So. Cal.

Try 20-250W and see if oil consumption does not drop for your car.
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Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

My Gallery

Not in this weather!
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  #9  
Old 06-10-2007, 12:17 AM
Texholdem
 
Join Date: Mar 2007
Location: Dallas
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Yes, Texas does have some colder days than California. So I assume 10W30 is fine, but next time I'll try higher weight, not in winter of course.
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1996 E320 since 1/16/08, 171K miles as of Feb 2011

---------------------------------------------------------
1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE
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  #10  
Old 06-10-2007, 01:21 AM
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You could be using 5w-20 for all I care, one quart per 50 miles means you've got a problem. Get a compression test done on each cylinder right away.
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  #11  
Old 06-10-2007, 03:21 AM
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Quote:
Originally Posted by Texholdem View Post
Yes, Texas does have some colder days than California. So I assume 10W30 is fine, but next time I'll try higher weight, not in winter of course.
Check your owner's manual first though.
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Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

My Gallery

Not in this weather!
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  #12  
Old 06-10-2007, 03:43 AM
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Join Date: Jun 2005
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Quote:
Originally Posted by Texholdem View Post
they ..used Kendall GT1 10W30 full synthetic.
Has your car always had fully synthetic oil?
Look like valve stem oil seal time..
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  #13  
Old 06-10-2007, 04:23 PM
Texholdem
 
Join Date: Mar 2007
Location: Dallas
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Quote:
Originally Posted by e320_Coupe View Post
Has your car always had fully synthetic oil?
Yes, it always has had fullsynthetic oil as long as in my possession.

Quote:
Originally Posted by e320_Coupe View Post
Look like valve stem oil seal time..
You may be quite right, yesterday I got the car tuned up by David S Poole, also a member here, and he mentioned the same thing, although he added that it is not pressing, so I am going to do it at next service interval.
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1996 E320 since 1/16/08, 171K miles as of Feb 2011

---------------------------------------------------------
1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE
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  #14  
Old 06-10-2007, 05:23 PM
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Location: Houston, Texas
Posts: 393
Change or your valve stem seals soon, or you will soon ruin your catalytic converter also if it is not ruined yet. A good MB mechanic should be able to do this without dismantling the engine, it is not an expensive job at all and your oil consumption will drop significantly after this.
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  #15  
Old 06-10-2007, 05:29 PM
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Posts: 368
i can't imagine yer car running at all at that rate.
yer sp plugs should be fouled.
are you sure you got that correct?
just not making sense.

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