E-Class (W211) 2003-2009

Oil change in automatic and transfer case of 4-Matic models now required by MB?

Old Nov 24, 2005 | 05:15 AM
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Frank Wiesmann's Avatar
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Oil change in automatic and transfer case of 4-Matic models now required by MB?

Hi everyone,

I just read in a German forum that as of this year, Mercedes is adding an oil change in all 722.6 and 722.9 automatic transmissions as well as the transfer case of all 4-matic models after 60,000 km to the standard maintenance plan. Has anyone heard of this being implemented in the US?
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Old Nov 24, 2005 | 05:42 AM
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'05 E320 CDI, '08 BMW X5 4.8i, '11 Duramax 2500HD
Originally Posted by Frank Wiesmann
Hi everyone,

I just read in a German forum that as of this year, Mercedes is adding an oil change in all 722.6 and 722.9 automatic transmissions as well as the transfer case of all 4-matic models after 60,000 km to the standard maintenance plan. Has anyone heard of this being implemented in the US?
I talked to an independent mechanic whom I'll be using about this very subject. He worked for a dealer for 10 years, and told me the worse idea, was the 0-maintenance transmission. Many failed way too early due to bad fluid.

I plan to flush/change filter on mine every 25K.. period. It's a lousy $200 worth of insurance!

Same goes for the coolant which will be done at 25K intervals..

Changing fluids is the best way to keep a car running for ever!
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Old Nov 24, 2005 | 09:40 AM
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I've seen that too. I'm hoping to see a TSB about it so those of us with 2003's and 2004's can get free fluid changes. BTW, they are now recommending a new fluid for the 5G transmission: FUCHS ATF 28 (A0019894603). No change in the recommended fluid for the 7G.

The first transmission service is recommended at 40,000 kilometers and then every 60,000 after that.
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Old Nov 24, 2005 | 09:57 AM
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Tranny Fluid Change

Not sure about the 05 E320 tranny's, but as of about the year 2000, MB stopped putting drain plugs in the torque converters. So, if you drain out the fluid in the transmission, you leave what is left in the torque converter ( maybe a couple of quarts). There is an involved way of disconnecting the cooler lines at the cooler in front, and tweaking the torque converter to get the remaining fluid out, but it is a pain. Sometimes those lines just twist and then you are screwed. So, maybe the best way is to just drain the fluid from the pan frequently, like every 25,000, so as to get the best mix possible between old and new. Comments?

Last edited by jimbo1mcm; Nov 25, 2005 at 05:33 AM.
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Old Nov 24, 2005 | 10:08 AM
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Originally Posted by jimbo1mcm
Not sure about the 05 E320 tranny's, but as of about the year 2000, MB stopped putting drain plugs in the torque converters. So, if you drain out the fluid in the transmission, you leave what is left in the torque converter ( maybe a couple of quarts). There is an involved way of disconnecting the cooler lines at the cooler in front, and tweaking the torque converter to get the remaining fluid out, but it is a pain. Sometimes those lines just twist and then you are screwed. So, maybe the best way is to just drain the fluid from the pan frequently, like every 25,00, so as to get the best mix possible between old and new. Comments?
I believe dealers (and my independent shops) have a machine that "pumps" out the ATF from all parts of the tranny, and flushes it with a bit extra, before refill so you have no old oil left. I'm going to do mine along with the filter every 25K as well as coolant.. I'm going to use the 7G fluid which is a better quality fluid. The MB maintenance is minimal at best (I got this from a former shop forman, who I'll be using heretofore for service).


You can use the 7G fluid on the 5G, but not the other way around, as per MB.
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Old Nov 24, 2005 | 10:34 AM
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Originally Posted by Frank Wiesmann
Hi everyone,

I just read in a German forum that as of this year, Mercedes is adding an oil change in all 722.6 and 722.9 automatic transmissions as well as the transfer case of all 4-matic models after 60,000 km to the standard maintenance plan. Has anyone heard of this being implemented in the US?
Frank, I've forgotten how I got to that forum. Can you post a link to it?

Thanks, Bud
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Old Nov 24, 2005 | 10:37 AM
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Originally Posted by CE750
You can use the 7G fluid on the 5G, but not the other way around, as per MB.
Sam, does this Info account for the new recommended 5G fluid Fuchs ATF 28?
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Old Nov 24, 2005 | 12:04 PM
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Originally Posted by BudC
Sam, does this Info account for the new recommended 5G fluid Fuchs ATF 28?
not sure, for all we know it's the same stuff.. Worth looking into, but apparently the stuff currently being used in the 5 is not as good as originally thought. I am told (source to remain anonymous) that there are several lawsuits about failed transmissions at "unreasonable milage" pending against MB on that trans.

As such, I'm going to dump mine out at the 13K service, and go with either the 7G fluid, or the ATF28 (assuming they're not the same thing).
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Old Nov 24, 2005 | 12:17 PM
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Originally Posted by CE750
As such, I'm going to dump mine out at the 13K service, and go with either the 7G fluid, or the ATF28 (assuming they're not the same thing).
According to the original German thread, they are not the same thing. The fluid for the 7G remains the same while they've replaced the fluid for the 5G. I wonder if it's the 5G or 7G transmissions they've had trouble with. I suspect some of it is due to the radiator failures on E500's allowing coolant to get into the transmission. Those would be 7G's. On the other hand, why would they be changing the fluid on the 5G's unless they had trouble?

In any case, if you elect to use the 5G fluid, make sure they use P/N A0019894603.

BTW, the original German thread recommended the first change at 40,000 kilometers to flush out debris that might have accumulated in either transmission.
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Old Nov 24, 2005 | 01:05 PM
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Originally Posted by BudC
According to the original German thread, they are not the same thing. The fluid for the 7G remains the same while they've replaced the fluid for the 5G. I wonder if it's the 5G or 7G transmissions they've had trouble with. I suspect some of it is due to the radiator failures on E500's allowing coolant to get into the transmission. Those would be 7G's. On the other hand, why would they be changing the fluid on the 5G's unless they had trouble?

In any case, if you elect to use the 5G fluid, make sure they use P/N A0019894603.

BTW, the original German thread recommended the first change at 40,000 kilometers to flush out debris that might have accumulated in either transmission.
I figure if there is a problem with the fluid, I'll get it out now.. 40K KM is about 25K miles.. after the 13K change, I'll revert to a 25K Miles schedule..

I will keep that part number with me when I go into the place (BTW, (Dan) Konigstiger turned me onto this guy at at the Scottsdale Airpark, seems really good and priced very well, PM Me if you want more info).
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Old Nov 24, 2005 | 01:16 PM
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Originally Posted by CE750
I figure if there is a problem with the fluid, I'll get it out now.. 40K KM is about 25K miles.. after the 13K change, I'll revert to a 25K Miles schedule..

I will keep that part number with me when I go into the place (BTW, (Dan) Konigstiger turned me onto this guy at at the Scottsdale Airpark, seems really good and priced very well, PM Me if you want more info).
After the first change they recommend changing every 60,000 kilometers or 36,000 miles.

I have (some) free maintenance for four years but not for things like brakes. Please PM me with the Info from Dan.

Thanks.
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