Read these two articles

Russ W

On Tue,8/8/17 12:02, Donald Snook via Mercedes wrote:
Speaking of transmission fluid and servicing of them, anyone else done a 
transmission flush with the machines that shops have now?   I remember when 
they first came out there was a machine that allegedly pushed the fluid in 
reverse to replace it.   When I worked at the dealership, we had a machine that 
hooked into the cooler lines and cycled a full 14 quarts through the 
transmission -- but not in reverse.  It was the normal direction of flow -- 
whatever that means.  But, it worked great.  Years later, I had it done on a 
couple of my wife's cars at another shop.   In fact, I had it done on Craigs 
1990 300D when I owned it.  I have never had any problems with a car after 
doing the flush.  But, I have heard stories (possibly urban legends) that it 
has caused transmissions to fail.  I'm asking because I am considering trying 
it on my older BMW.  BUT, BMW transmissions are not technically serviceable.  
There is no dipstick and BMW says it is a sealed system and should not be serv!
  iced because it is built to last a lifetime.  I have never had a transmission 
problem on any of the 5 BMWs I have had.  So, maybe I shouldn't tempt fate.

Don Snook

-----Original Message-----
From: Max Dillon []
Sent: Tuesday, August 08, 2017 1:02 AM
To: Mercedes Discussion List <>
Subject: Re: [MBZ] An oil question

Correct, I spent hours digging into the official MB oil sheets, and Dex III is 
the answer.  One can spend more (Mobil 1, Febi, Fuchs, etc) if desired, no harm 
except your wallet.  Personally I use the Febi fluid now, I used M1 for the 
first change though.


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