Notices
Mercedes Tech Talk Discuss general technical questions and issues about your Mercedes-Benz. Moderated by a certified MB Tech.
Sponsored by:
Sponsored by:

2005 C230K water in oil HELP

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Mar 5, 2019 | 10:01 PM
  #1  
Hnovak's Avatar
Thread Starter
Newbie
 
Joined: Mar 2019
Posts: 8
Likes: 1
2005 c230 kompressor
2005 C230K water in oil HELP

I the oil I'm my 05 c230k is pretty milky, and theres oil in my coolant resivor, the car has 124 thousand miles on it, and it runs and drives great. I just bought it so, I dont know the service history. Any ideas on what I should do? I hear it can be seals behind the timing cover? Or the oil cooler gasket? Thanks
Reply
Old Mar 6, 2019 | 07:00 PM
  #2  
Hnovak's Avatar
Thread Starter
Newbie
 
Joined: Mar 2019
Posts: 8
Likes: 1
2005 c230 kompressor
Originally Posted by Plutoe
Are sure that its engine oil and not transmission fluid------please confirm!
The car is a manual transmission? And I'm pretty sure it's not transmission fluid. It looks pretty oily inside the coolant resivor.
Reply
Old Mar 6, 2019 | 10:18 PM
  #3  
Hnovak's Avatar
Thread Starter
Newbie
 
Joined: Mar 2019
Posts: 8
Likes: 1
2005 c230 kompressor
Originally Posted by Plutoe
Than all you post makes sense, you have blown a head gasket. I wouldn't drive the car much more else you loose the engine.
I'm not getting any other signs of it being a head gasket, no smoke, bubbling in the coolant resivor, and the car runs great. ???
Reply
Old Sep 19, 2019 | 12:30 AM
  #4  
Collin Minor's Avatar
Newbie
 
Joined: Aug 2019
Posts: 12
Likes: 2
2004 C230 Sedan
Originally Posted by Hnovak
I'm not getting any other signs of it being a head gasket, no smoke, bubbling in the coolant resivor, and the car runs great. ???
I’m having the exact same problem with my C230K. Was it the head gasket or something else?
Reply
Old Sep 20, 2019 | 01:34 PM
  #5  
Hnovak's Avatar
Thread Starter
Newbie
 
Joined: Mar 2019
Posts: 8
Likes: 1
2005 c230 kompressor
Originally Posted by Collin Minor
I’m having the exact same problem with my C230K. Was it the head gasket or something else?
Theres an oil cooler bolted to the back of the block right above the starter, you have to pull out the starter and like extensions and I joints together to try to unbolt the oil cooler, the gasket in there can fail and cause cross contamination. I wasn't able to get it off because of how the bell housing blocks one of the bolts. Another place to try is seals behind the timing cover can leak. Or it could be a head gasket. I really just gave up on my car, so I sold it to someone who had the means to fix it. Sorry I couldn't be of more help.

One thing I did though was flush the coolant with just water and change the oil, that seemed to remedy the problem, then the additives and glycol in the coolant doesn't create a sludge when it mixes, it just evaporates off. As a last ditch effort, maybe try a good stopleak in the coolant and do a fluid change.
Reply
Old Sep 26, 2019 | 10:51 PM
  #6  
Collin Minor's Avatar
Newbie
 
Joined: Aug 2019
Posts: 12
Likes: 2
2004 C230 Sedan
Originally Posted by Hnovak
Theres an oil cooler bolted to the back of the block right above the starter, you have to pull out the starter and like extensions and I joints together to try to unbolt the oil cooler, the gasket in there can fail and cause cross contamination. I wasn't able to get it off because of how the bell housing blocks one of the bolts. Another place to try is seals behind the timing cover can leak. Or it could be a head gasket. I really just gave up on my car, so I sold it to someone who had the means to fix it. Sorry I couldn't be of more help.

One thing I did though was flush the coolant with just water and change the oil, that seemed to remedy the problem, then the additives and glycol in the coolant doesn't create a sludge when it mixes, it just evaporates off. As a last ditch effort, maybe try a good stopleak in the coolant and do a fluid change.
I really appreciate the reply. I think I’m gonna just go with an oil change a month to be honest😂 I don’t drive it much and when I find an Infiniti QX56 I really like it’ll pretty much sit. I think it’s the oil cooler myself. Maybe that timing cover leak. I really don’t know at this point. It’s well used (187,000 miles) and in pretty decent shape. It’s Capri Blue Metallic, so a really nice paint color. I really couldn’t see myself getting rid of it if it is an oil cooler. Now that timing cover gasket or a head gasket, I’ll consider selling it.
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 01:49 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