C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

c180 tiny oil patch under the radiator

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Old Jun 13, 2015 | 04:14 AM
  #1  
varangy's Avatar
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From: Norwich UK
MB C180 CL203 (W203 coupe) 2002
c180 tiny oil patch under the radiator

Hi guys, just I have find a small oil leak under the left side of the oil radiator (see from front)
There has 2 copper (?) joint, one of the top, and one of the bottom. (highlighted with red arrows)
I am not sure that is engine or transmission oil, but here is the photo below.
Actually, I have a problem with the bottom joint, I guess with the O ring have connecting to the radiator. Have been changed already, but still the problem are there, when the engine does run.
Unfortunatelly, I does not know, what the name of these part. I am looking for as "transmission coolant hose" and some similar like this, ie oil intake coolant joint ... etc etc. LOL
Could any one provide any useful info about this pls? (The air filter housing has been removed)

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Old Jun 13, 2015 | 05:42 AM
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MB C180 CL203 (W203 coupe) 2002
hi again, can anyone confirm or reject, this part are suitable there, or no?

http://www.ebay.co.uk/itm/2011072663...%3AMEBIDX%3AIT

photo

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Old Jun 13, 2015 | 09:04 AM
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From: Toronto, Ontario, Canada, eh!
2003 C230 Sports Coupe, Paprika Metallic Red, Auto, Pano, Leather
That photo is date-stamped 5 years ago - likely not yours.
Check if radiator is Valeo or Behr!
If Valeo change it out to Behr!
Check for coolant in Transmission fluid, if so then flush and change fluid!
Check for transmission fluid in Coolant fluid, if so then flush and change fluid.
Buy OEM parts whenevr possible.
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Old Jun 13, 2015 | 01:04 PM
  #4  
varangy's Avatar
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From: Norwich UK
MB C180 CL203 (W203 coupe) 2002
Hey mate
I really appreciated for your response, thanks a lot
The photo is definitely shown my merc engine bay, and the timestamp shown a wrong dates, cos I just forgot to setting up my camera before I taken a picture

Dont know the brand of my radiator, but I'll check next time, when I came off that again.
The fluid which has gone out is definetely any kind of the oil, so probably transmission fluid ... but not coolant.
But I am not sure what the wrong on there, the elements of the joint, or the radiator hole has any wear or scratch inside.

Unfortunately I still dont know the name of the hose/pipe/joint are connecting to the hole on the radiator. Do you know maybe pls?

Thanks anyway
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Old Jun 13, 2015 | 10:27 PM
  #5  
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From: Toronto, Ontario, Canada, eh!
2003 C230 Sports Coupe, Paprika Metallic Red, Auto, Pano, Leather
Search Valeo behr radiator
If you have valeo your problem is way worst than just the hose and washer you're foo focused on
For parts lookup,... Mbpartsworld.com
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