S600 Oil Cooler Repair. Just Gasket or Entire Cooler?
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2001 S600 Lorinser Body Kit & W215 Front-End Conversion
S600 Oil Cooler Repair. Just Gasket or Entire Cooler?
So I am about to take the expensive venture of repairing my 01 S600 oil cooler. Just wanted to ask here if anyone knows whether it's just the gasket underneath the cooler that needs replacing OR the oil cooler itself(and the gasket underneath of course)? Was told my by local independent MB repair shop that it's just the gasket underneath the cooler which needs to be replaced when it leaks down there. AFAIK, there is also a gasket inside the oil cooler and last I heard, MB does not offer a replacement part for it. So if that leaks, the entire oil cooler needs to be replaced. I guess what I'm trying to figure out is does the gasket inside the oil cooler leak as well? If that's the case, then I might as well replace the cooler. I'm having the shop do the job and I'm trying to gather all the parts for it and have everything besides the cooler. But am trying to get some educated opinion whether I should replace the cooler as well? Thanks in advance.
Last edited by shooffnyc; Feb 27, 2018 at 02:24 PM.
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From: Dallas, TX
2008 E63 wagon (1 of 62)
If you are dealing with replacement of the oil cooler and you do all the work to get there, there is no reason not to just go ahead and install a new one (unless the parts are extremely unreasonable). If it is the V12 with the cooler between the cylinder heads in the valley, you are removing the engine and removing the cylinder heads to do this repair. Why skimp at that point?
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2001 S600 Lorinser Body Kit & W215 Front-End Conversion
If you are dealing with replacement of the oil cooler and you do all the work to get there, there is no reason not to just go ahead and install a new one (unless the parts are extremely unreasonable). If it is the V12 with the cooler between the cylinder heads in the valley, you are removing the engine and removing the cylinder heads to do this repair. Why skimp at that point?
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Mercedes
Unfortunately the design of placing the oil cooler in such a stupid location means even the new replacement will require repair again in 40/50k miles
this isn't one of those situations where a new part has been improved or lasts longer
this isn't one of those situations where a new part has been improved or lasts longer
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2001 S600 Lorinser Body Kit & W215 Front-End Conversion
Yeah, my thoughts exactly. I am not sure if applying some sort of sealant around/outside edges of where it sits would make any difference. I guess I'll have to see. Wish there were others who had done this crazy procedure can chime in. See some really old posts on this subject of some who had done it but wonder if they are still around. Anyways, thanks for the info.
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From: Montreal, Quebec
2009 E350 4M Avantgarde;mistress 2002 S600; wife 2014 C300 4M
Since I did that job a few years ago, some hints:
a) plan and follow the WIC specifically, I had no trouble doing the job with the engine installed
b) to the Untorking exactly as specified, same for the head bolts; you can reuse them if you can accurately measure their length and check
c) getting the chain sprockets of is a real pain, and you need special holding fixtures to hold the cams (cant just use the chain)
d) getting the rail guide pins out is an even bigger pain
e) after you replace the cooler and tork it down, re-torke the srews that hold the cooler halves together (they will be loose, and are probably the cause of the failure.
f) not for the faint of heart when it comes to torquing
You can search my Nick here and on the other forum to find my comments on this.
Good luck!
a) plan and follow the WIC specifically, I had no trouble doing the job with the engine installed
b) to the Untorking exactly as specified, same for the head bolts; you can reuse them if you can accurately measure their length and check
c) getting the chain sprockets of is a real pain, and you need special holding fixtures to hold the cams (cant just use the chain)
d) getting the rail guide pins out is an even bigger pain
e) after you replace the cooler and tork it down, re-torke the srews that hold the cooler halves together (they will be loose, and are probably the cause of the failure.
f) not for the faint of heart when it comes to torquing
You can search my Nick here and on the other forum to find my comments on this.
Good luck!
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Joined: Apr 2016
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2001 S600 Lorinser Body Kit & W215 Front-End Conversion
Since I did that job a few years ago, some hints:
a) plan and follow the WIC specifically, I had no trouble doing the job with the engine installed
b) to the Untorking exactly as specified, same for the head bolts; you can reuse them if you can accurately measure their length and check
c) getting the chain sprockets of is a real pain, and you need special holding fixtures to hold the cams (cant just use the chain)
d) getting the rail guide pins out is an even bigger pain
e) after you replace the cooler and tork it down, re-torke the srews that hold the cooler halves together (they will be loose, and are probably the cause of the failure.
f) not for the faint of heart when it comes to torquing
You can search my Nick here and on the other forum to find my comments on this.
Good luck!
a) plan and follow the WIC specifically, I had no trouble doing the job with the engine installed
b) to the Untorking exactly as specified, same for the head bolts; you can reuse them if you can accurately measure their length and check
c) getting the chain sprockets of is a real pain, and you need special holding fixtures to hold the cams (cant just use the chain)
d) getting the rail guide pins out is an even bigger pain
e) after you replace the cooler and tork it down, re-torke the srews that hold the cooler halves together (they will be loose, and are probably the cause of the failure.
f) not for the faint of heart when it comes to torquing
You can search my Nick here and on the other forum to find my comments on this.
Good luck!
Anyways, thanks a bunch kraut. I'll let you know how it went. This has been the cause of big headache to me because I sold my previous S600(very regrettable) to buy this S600 and was ready to purchase the headers. But this oil cooler leak totally derailed my project and put it to halt. Anyways, I can't wait. I'll start making VLogs on my YouTube channel in few weeks about the car and post updates about the project. Thank you, and everyone else on this forum for all the help and insight you guys provide. I'll make sure to give each and every one of you guys a special shout out.
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S55 AMG
Just curious, is it possible to retrofit the improved M275 oil cooler system on the older models?
Also, it may sound stupid, but is it possible to get the TTV12 and just replace the turbos with the custom headers and have a more reliable engine? Or is the ecu going to freak out with the lack of turbos
Also, it may sound stupid, but is it possible to get the TTV12 and just replace the turbos with the custom headers and have a more reliable engine? Or is the ecu going to freak out with the lack of turbos
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From: Montreal, Quebec
2009 E350 4M Avantgarde;mistress 2002 S600; wife 2014 C300 4M
don't think so.
About 35 hrs to do, and removing/installing the exhaust muff clamps and the cylinder heads requires 3.5 hands.
About 35 hrs to do, and removing/installing the exhaust muff clamps and the cylinder heads requires 3.5 hands.
Thread Starter
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2001 S600 Lorinser Body Kit & W215 Front-End Conversion
Just curious, is it possible to retrofit the improved M275 oil cooler system on the older models?
Also, it may sound stupid, but is it possible to get the TTV12 and just replace the turbos with the custom headers and have a more reliable engine? Or is the ecu going to freak out with the lack of turbos
Also, it may sound stupid, but is it possible to get the TTV12 and just replace the turbos with the custom headers and have a more reliable engine? Or is the ecu going to freak out with the lack of turbos
M137 oil cooler:
https://i.ebayimg.com/images/g/cs0AA...HD/s-l1600.jpg
M275 Oil Cooler:
https://i.ebayimg.com/images/g/xpMAA...VR/s-l1600.jpg
Thread Starter
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2001 S600 Lorinser Body Kit & W215 Front-End Conversion
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2006 S600
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S55 AMG
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2001 S600 Lorinser Body Kit & W215 Front-End Conversion
Would you know exactly how many #'s it should be torqued at? I heard that torquing those might damage the gasket inside it. Also is that bit mentioned on the repair manual? Regardless, I'd like to do it, but if you remember how much you torqued it to, that would be great info. Thanks.
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From: Montreal, Quebec
2009 E350 4M Avantgarde;mistress 2002 S600; wife 2014 C300 4M
It's not in the WIS - I just snugged the screws up with a screwdriver. The gasket inside the cooler halves fails because it gets brittle from heat. It is a moulded O-ring type gasket, and is compressed by the hold-down bolts of the cooler. the screws just hold the halves together as an assembly.
Last edited by kraut56; Mar 10, 2018 at 05:38 PM.
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2001 S600 Lorinser Body Kit & W215 Front-End Conversion
It's not in the WIS - I just snugged the screws up with a screwdriver. The gasket inside the cooler halves fails because it gets brittle from heat. It is a moulded O-ring type gasket, and is compressed by the hold-down bolts of the cooler. the screws just hold the halves together as an assembly.
