Gentle Warning - Service your 722.9 Transmission every 39K miles 60K Km's
MBWorld Fanatic!
Joined: Nov 2012
Posts: 1,319
Likes: 14
From: SoCal
None for now
I have an 05 CLK500 and it has 92,100 miles and I bought it with 82,900 miles 1.5 years ago. How would I service it? I know a mechanic and dont want to go to the dealer unless I HAVE to. BTW I have a jerky shift (slippage?)from 1-2 in S mode.
MBworld Guru
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
The fluid was absolutely black. The magnets were coated with fine particulate - nearly as thick as the magnets themselves. That was at 40K miles. About 500 miles later, I had to drop the pan to fix a leak (I had a slight misalignment with the gasket) and the fluid was already dark again, and the magnets had a nice layers of particulate. Here's my thread linked below. There is a photo of the old filter and the oil colors on a white cloth whre you can see the darkness:
https://mbworld.org/forums/clk-class...id-change.html
https://mbworld.org/forums/clk-class...id-change.html
Senior Member
Joined: Oct 2013
Posts: 300
Likes: 13
From: GA, USA
Current: '19 E450 Cabriolet - Past: '19 C300 Coupe, '12 SLK350, '16 E350, '14 C250 (x2), '09 CLK350
Used my usual awesome indy who did the whole transmission service for about $400. Got my car at 45k, brought in for service at 49k and trans fluid was black sludge. No way what I saw could be healthy. I have a warranty for another 45k miles on mine, but I'd rather my transmission be in good shape in the meantime. What I've learned is don't subscribe to the "wait until it breaks" philosophy with a Benz...enjoy the ride!
