SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Is this transmission or engine oil?

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Old Jun 9, 2007 | 11:24 PM
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'08 Audi R8, '09 SL63, '10 GLK, '10 ML550
Is this transmission or engine oil?

I found this (see thumbnail photo below) on my garage floor tonight after I pulled my SL out to wash it. My SL is only 14 months old. Is this an engine or transmission leak? I grew up in a family of (all) boys who loved cars and they always told me you could tell transmission oil from engine oil because of the red color of transmission oil. I am afraid it looks like transmission oil, but I could be wrong. I LOVE my car! What does this mean? Is this bad?

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Sue’s 2006 SL500
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Attached Thumbnails Is this transmission or engine oil?-oil.jpg  
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Old Jun 10, 2007 | 12:03 AM
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2006 SL600, 2001 S500, 1996 SL320
Any work

Any work performed on your car lately??
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Old Jun 10, 2007 | 01:11 AM
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Can't really see, but it looks like motor oil to me. if that is transmission oil, then it looks pretty burnt up.
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Old Jun 10, 2007 | 08:22 AM
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1967 Morris Cooper "S", 1983 911SC, 1997 Toyota Tacoma, 1999 HD FXSTB, 1998 C43
+1 I think it's oil too - although it's looks like two separate leaks it could be just from oil puddling up on the plastic pan underneath and running out at two sides. Could be spillage from an oil change???
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Old Jun 10, 2007 | 10:53 AM
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'08 Audi R8, '09 SL63, '10 GLK, '10 ML550
Originally Posted by StephenK
Any work performed on your car lately??
Just Service A in January. No other car has parked in that spot in the garage, either. I will call MB service on Monday. For some reason, and maybe from reading this forum for over a year, I fear transmission problems, so when I saw those spots and saw the color I thought it was that for sure. But, since it is not clearly transmission oil, maybe it just a leaky seal or something more minor.

Something I have wondered. I am curious how many SL drivers use their shiftronic. Can you guys weigh in and tell me whether you use your shifttronic or not. I use mine all the time, and I wonder if that causes more stress on the transmission. It probably depends on shifting patterns.
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Old Jun 10, 2007 | 12:47 PM
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2006 SL600, 2001 S500, 1996 SL320
I had a leak too

I had a leak too after a Service A, on a subsequent visit they found the tech put the wrong part number in on the bottom of the car and even though it was tight, it still leaked. I bet you have the same situation and a very easy fix. - OIL LEAK!!!!

Last edited by StephenK; Jun 10, 2007 at 02:46 PM.
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Old Jun 10, 2007 | 01:29 PM
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13 pin transmission connector o-ring...

Happened to mine as well.
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Old Jun 10, 2007 | 08:43 PM
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'08 Audi R8, '09 SL63, '10 GLK, '10 ML550
Originally Posted by NSM
13 pin transmission connector o-ring...

Happened to mine as well.
Great. I was so worried about the transmission, although it has three more years of warranty. I sounds like an easy fix. It will just be a pain to take it in. Thanks, everyone, for your input.
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Old Jun 13, 2007 | 06:36 PM
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'08 Audi R8, '09 SL63, '10 GLK, '10 ML550
I took my SL in today for the oil leak. It was an engine oil leak, due to a faulty valve cover. A new valve cover is on order and it will all be taken care of under warranty.
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