SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: What is this leak?

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Old Nov 16, 2020 | 03:39 PM
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rbc3az's Avatar
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From: Arizona
2004 E55 AMG, 1996 SL500, 2004 E400 4Matic Wagon
What is this leak?

I’m considering buying 1996 SL500 with 136k miles. It has a slow leak under the driver side (pictured). The passenger side is dry. No leaks visible in the engine bay.

Also has a hydraulic oil dripping from top of windshield on the drivers side. Otherwise top is new, everything is working, and mechanism in back appears to be OK.

What could be causing the leak under the car and should I not consider purchasing it? Seller is asking $4500.



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Old Nov 16, 2020 | 04:07 PM
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From: Lutz, FL
1997 MB SL600
Good price.

The hydraulic top cylinders (there are 11 of them) are leaking and need to be changed out. 4 are somewhat difficult, the rest are pretty easy for a competent mechanic.

Do a Google search on Top Hydraulics and take a peek at the tutorials for the R129 and the prices to rebuild.

A lot of folks make a big deal out of the replacement, but it's not all that difficult.

Last edited by mahunt; Nov 16, 2020 at 04:09 PM.
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Old Nov 16, 2020 | 05:02 PM
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rbc3az's Avatar
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2004 E55 AMG, 1996 SL500, 2004 E400 4Matic Wagon
Thanks for the info. I'll probably tackle the soft top leak/cylinders myself.
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Old Nov 17, 2020 | 12:35 AM
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From: Riverside, CA
1999 SL600
The underbody wetness on the drivers side could be power steering fluid
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