S55 AMG, S65 AMG , S63 AMG (W220, W221) 2001 - 2013 (Two Generations)

65 owners - help, what's this?

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Old 09-13-2010, 07:52 AM
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mhh
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2012 MB E63 Wagon, 2012 BMW M5, 2010 Porsche 911 Turbo S, 2010 Ferrari 458
65 owners - help, what's this?

At the rear of my '08 S65's engine cover is what looks like an old style radiator cap with an overflow pipe. Anyone know what it is? Does your have a drain hose attached?

You'll see in the second pic that some fluid is draining, leaving a white stain.

I've got a bad smell in the a/c when the air vents are open (not on recirculate though), so I've been looking for the culprit and noticed this.

Any ideas from 65 owners welcome!
Attached Thumbnails 65 owners - help, what's this?-s65-007.jpg   65 owners - help, what's this?-s65-008.jpg  

Last edited by mhh; 09-13-2010 at 07:55 AM.
Old 09-13-2010, 08:58 AM
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His mama. Traded y0 mama in because she was squeaking.
Low temperature cooling circuit.

You either have a bad cap, a bad IC pump, or you drove the **** out of that 65.

But even with driving the hell out of it, I don't see the coolant getting hot enough to boil over. So, I'm going with a bad cap.

Last edited by Sathinas; 09-13-2010 at 09:02 AM.
Old 09-13-2010, 03:17 PM
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mhh
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2012 MB E63 Wagon, 2012 BMW M5, 2010 Porsche 911 Turbo S, 2010 Ferrari 458
Originally Posted by Sathinas
Low temperature cooling circuit.

You either have a bad cap, a bad IC pump, or you drove the **** out of that 65.

But even with driving the hell out of it, I don't see the coolant getting hot enough to boil over. So, I'm going with a bad cap.
Should there be a hose on the ribbed overflow nozzle in the pic?

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