C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

Wrong transmission fluid 722.6 need guidance

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Apr 5, 2026 | 03:03 PM
  #1  
Mbkevs's Avatar
Thread Starter
Newbie
 
Joined: Apr 2026
Posts: 1
Likes: 0
Mercedes c220 cdi 2009
Wrong transmission fluid 722.6 need guidance

My car got the transmission fluid drained with the plug and then refilled with the wrong fluid which was DX ATF 2, im a bit lost on what to do next. could i just drain it and refill it again from what i understood it only takes out like 50-60% of the transmission fluid
second option would be to let a workshop flush it completely with a machine?
third option was to pull the plug in the bottom and also pull the torque converter plug and that would empty about 70-80% of the fluid?

Also the transmission fluid was exchanged 2 years ago with gasket and filters. would thoose need to be exchanged again because of the wrong oil?


CAR C220 W204 2009 transmission 722.6
Reply
Old Apr 5, 2026 | 07:21 PM
  #2  
TimC300's Avatar
MBWorld Fanatic!
Community Builder
Liked
Loved
Community Favorite
 
Joined: Aug 2023
Posts: 3,689
Likes: 1,111
From: MA Coast
W204 2010 C300 4matic Sport M272
The procedure to flush the 722.6 transmission and torque converter is fairly straight forward and nothing special is needed with the torque converter.

You have the transmission dipstick correct/filler pipe correct?

Manual says basically drain the fluid, remove pan and replace the filter, reinstall the pan.

Remove the right side cooling line on the transmission and connect it to a hose to allow fluid to drain into a bucket. using the filler pipe add 5 quarts fluid, run engine until 3 quarts fluid are drained out the hose, shut off engine, add 3 more quarts, repeat.

Heres a link to what I was looking at: https://charm.li/Mercedes%20Benz/200...e%20Converter/
Reply
Old Apr 5, 2026 | 07:27 PM
  #3  
TimC300's Avatar
MBWorld Fanatic!
Community Builder
Liked
Loved
Community Favorite
 
Joined: Aug 2023
Posts: 3,689
Likes: 1,111
From: MA Coast
W204 2010 C300 4matic Sport M272





Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 10:18 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE