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2006 ML350 burning oil

 
Old 11-01-2009, 10:00 PM
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2006 ML350 burning oil

Anyone experience needing to put oil into their high mileage 80k 2006 ML350? Recently, I have noticed that the ML350 needs a quart of oil every 2-3k miles. The car is driven in stop and go traffic daily and averages 80 miles a day.
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Old 11-01-2009, 11:19 PM
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Originally Posted by gsrjc View Post
Anyone experience needing to put oil into their high mileage 80k 2006 ML350? Recently, I have noticed that the ML350 needs a quart of oil every 2-3k miles. The car is driven in stop and go traffic daily and averages 80 miles a day.
Could be some varnish on the piston rings from so much low speed stop and start driving. My last MLwhich was a gas engine and I passed along to my sister when I bought my new one...now has 160000 miles on it and still doesn't use enough oil between changes to warrant adding any.This type of driving will also be hard on your tranny fluid so you may want to consider shortening the service interval on that as well.

Last edited by Vernl; 11-02-2009 at 09:08 AM.
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Old 11-02-2009, 10:55 PM
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Originally Posted by Vernl View Post
Could be some varnish on the piston rings from so much low speed stop and start driving. My last MLwhich was a gas engine and I passed along to my sister when I bought my new one...now has 160000 miles on it and still doesn't use enough oil between changes to warrant adding any.This type of driving will also be hard on your tranny fluid so you may want to consider shortening the service interval on that as well.
Okay. Thanks for the info.
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Old 11-28-2009, 12:16 PM
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My father's 06 R500 burns through enough oil to need an extra quart between oil changes.

Service Dept in Marin says this is normal.

We have worried about an ever present engine whine when cold that they say is an oil pump when cold.
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Old 12-01-2009, 06:29 PM
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Our 2006 ML350 has 75k miles on it and it does not burn oil that fast. We do oil change every 7,500 miles or so. Car does 90 miles of driving a day during the weekdays.
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Old 12-01-2009, 07:47 PM
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In any of the 7 MB's that I have had since 1998 I have never had to add a drop of oil between changes at the suggested interval. The last Benz that I had that used oil was my 1974 450SL and that was repaired by the dealer at 75000 miles and it was an easy fix, valve seals.
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Old 12-01-2009, 07:52 PM
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uh oh

Do we have a problem with our R500 then? Dealer says no.
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Old 12-01-2009, 09:35 PM
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Originally Posted by sosh View Post
In any of the 7 MB's that I have had since 1998 I have never had to add a drop of oil between changes at the suggested interval. The last Benz that I had that used oil was my 1974 450SL and that was repaired by the dealer at 75000 miles and it was an easy fix, valve seals.
I found out that a couple of the valve seals were leaking and also the oil cap was leaking slightly but i didn't think that would make that much oil loss.
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Old 12-02-2009, 01:56 PM
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Originally Posted by gsrjc View Post
I found out that a couple of the valve seals were leaking and also the oil cap was leaking slightly but i didn't think that would make that much oil loss.
How could you find valve seals leaking?? Perhaps you mean vave cover gasket leaking??
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Old 12-02-2009, 09:29 PM
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Originally Posted by sosh View Post
How could you find valve seals leaking?? Perhaps you mean vave cover gasket leaking??
Sorry, I didn't find it. Mercedes service found the problem when I brought the car in.
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Old 12-03-2009, 10:18 AM
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Originally Posted by gsrjc View Post
Sorry, I didn't find it. Mercedes service found the problem when I brought the car in.
Leaking valve seals can cause the amount of oil burning that you are experiencing. Are they taking care of this??
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Old 12-03-2009, 08:52 PM
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Originally Posted by sosh View Post
Leaking valve seals can cause the amount of oil burning that you are experiencing. Are they taking care of this??
Yes, they took care of everything. They've also started an oil tracking so I have to bring the car in whenever the check oil light shows up so they can determine how much oil it is burning compared to the number of miles that are driven on the car.
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Old 12-04-2009, 12:19 AM
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Head-gaskets are being replaced now under warranty. Thanks for helping me point them in the right direction!
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Old 12-04-2009, 11:43 PM
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Just saw this today that a small string portion of the timing belt was ripped away from the motor.... i'll be taking the car back to service. i'm unsure if something that they did caused this. basically about an 1/8 inch width of the timing belt came apart... i wonder if i am able to put this on service considering i just had the car in for stuff.
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Old 12-05-2009, 01:05 PM
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Originally Posted by gsrjc View Post
Just saw this today that a small string portion of the timing belt was ripped away from the motor.... i'll be taking the car back to service. i'm unsure if something that they did caused this. basically about an 1/8 inch width of the timing belt came apart... i wonder if i am able to put this on service considering i just had the car in for stuff.
What car were you looking at?? The ML and I believe all MB's have no timing belt!! They use a chain. Even if it did have a belt it would not be visable without taking stuff apart. You must be looking at the Serp Belt which is on the front of the engine and drives things like the A/C, PS, water pump and Alt. Big difference. This belt is also a consumable and very easy to replace.
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Old 12-07-2009, 02:23 PM
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Originally Posted by sosh View Post
What car were you looking at?? The ML and I believe all MB's have no timing belt!! They use a chain. Even if it did have a belt it would not be visable without taking stuff apart. You must be looking at the Serp Belt which is on the front of the engine and drives things like the A/C, PS, water pump and Alt. Big difference. This belt is also a consumable and very easy to replace.
You are correct, I thought it was the timing belt. It was the V belt.... MB service is taking care of it internally. Apparently, something they did when they worked on the PS pump caused the problem.

Last edited by gsrjc; 12-07-2009 at 02:25 PM.
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Old 12-07-2009, 03:39 PM
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Originally Posted by gsrjc View Post
You are correct, I thought it was the timing belt. It was the V belt.... MB service is taking care of it internally. Apparently, something they did when they worked on the PS pump caused the problem.
Actually you are incorrect again. There is no "V" belt in the ML. The belt you see on the front of the engine is a serpentine belt. Its actually flat with no "V" shape. On older vehicles there were "V" belts that were referred to as fan belts but they did much more than power the fan. And, there usually were several of them.
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Old 12-07-2009, 10:59 PM
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Originally Posted by sosh View Post
Actually you are incorrect again. There is no "V" belt in the ML. The belt you see on the front of the engine is a serpentine belt. Its actually flat with no "V" shape. On older vehicles there were "V" belts that were referred to as fan belts but they did much more than power the fan. And, there usually were several of them.
That's what MB service wrote on the paperwork so just going by what they wrote. I figure they know what they are talking about. Either way though, MB changed the belt because the shredding was caused by incorrect placement of the belt after they had to change the power steering pump.
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Old 12-13-2009, 01:08 PM
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Originally Posted by gsrjc View Post
That's what MB service wrote on the paperwork so just going by what they wrote. I figure they know what they are talking about. Either way though, MB changed the belt because the shredding was caused by incorrect placement of the belt after they had to change the power steering pump.
What kind of mechs !
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