R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

HELP....any ideas where the leak comes from ?

Old Jan 31, 2018 | 03:22 PM
  #1  
Mattthieu's Avatar
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1998 ml320 with lift, dirt tires and rust !!!
HELP....any ideas where the leak comes from ?

hi

got a 2006 r500, recently saw that :

so oil seems to oroginate from around somewhere above the alternator..... Does not come from oil plunger thing......


and off course the belt is full of oil, sprays averywhere.


closer look



SO, no idea where it comes from, does not seems to be an active leak as oil level is still ok AND there is no drip under the car nor on the engine lower splash protection plate... not an old leak either, was not there few weeks ago, then i let my wife drive the car and, voila...lol

seriously, i know the belt is the due for a change, i,ll change it *** soon as the leak is taken care of.

ANY INPUTS, anyone whom that happened before ? any places, things, seals, tubes hoses you would recommend to check ????

i must ad, i can not really clean it right now it's minus a lot outsides water would just freeze all over....

thanks
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Old Jun 21, 2018 | 02:55 AM
  #2  
kevinchung's Avatar
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A160(Sold) C180(Sold), ML320(Dead! Sold) CDi, R300 CDi
did you find out the problem?
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Old Jun 24, 2018 | 05:43 PM
  #3  
BenzBallin's Avatar
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R350 2008 4Matic Gasoline
What color is it ?? If its red or green the Color of your Power Steering Oil..then there you go..try cleaning it with a white Paper Towel,..and if its brown Dark brown..the you know its engine oil and its maybe a Seal Leak...on the Head of the Engine or somewhere...
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Old Aug 10, 2018 | 09:30 PM
  #4  
Lee Lauer's Avatar
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2006 R350
Angry

I literally just had the same problem, except that the leak fried the alternator in the process. It was leaking from one of the sensors near the top of the engine. A $2 o-ring fixed the leak and $250 for a new alternator.
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Old Aug 11, 2018 | 11:03 AM
  #5  
BenzBallin's Avatar
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R350 2008 4Matic Gasoline
Wow where was the O-ring that failed located ? Also what Year was both of you guys your Car ???


Originally Posted by Lee Lauer
I literally just had the same problem, except that the leak fried the alternator in the process. It was leaking from one of the sensors near the top of the engine. A $2 o-ring fixed the leak and $250 for a new alternator.
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Old Aug 11, 2018 | 12:33 PM
  #6  
Lee Lauer's Avatar
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2006 R350
Originally Posted by BenzBallin
Wow where was the O-ring that failed located ? Also what Year was both of you guys your Car ???

Not sure which sensor that is but it had leaked and dripped all over the alternator.

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Old Aug 11, 2018 | 03:09 PM
  #7  
BenzBallin's Avatar
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R350 2008 4Matic Gasoline
Thanx for that info my friend...ill keep an eye out for that"


Originally Posted by Lee Lauer
Not sure which sensor that is but it had leaked and dripped all over the alternator.
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Old Aug 12, 2018 | 09:05 AM
  #8  
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2006 R350
Originally Posted by BenzBallin
Thanx for that info my friend...ill keep an eye out for that"
No problem. Just take care of it soon before it kills your alternator.....
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