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Old 09-17-2003, 07:37 PM
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Join Date: Aug 2003
Location: Connecticut
Posts: 19
Oil leak when parked on incline

Help! Have an oil leak when my 88 560SL is parked and shut off on an incline with the nose parked up the hill. Can't seem to find the origin. Cleaned the underside with degreaser and ran it, parked it level and don't see a leak. Going to bring it back and park it on the hill to reproduce the scene. Any ideas on why it may leak on an incline? Thanks.
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Old 09-17-2003, 07:50 PM
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Join Date: Jun 2002
Location: Monrovia, CA
Posts: 490
Possibly because it's dripping off of something when on an incline that it's otherwise puddling up on when it's level. I'm not at all familiar with the 560SL - does it have the heavy plastic noise shield bolted on under the engine compartment? If so, that's a perfect place for oil to collect. When you're driving, it's probably being blown back and off, and when you park on a level it's probably just collecting on the shield. When you park on an uphill incline, it will run out the back of the sheild and drip on the ground. When you park on a downhill incline, it just runs forward and collects at the front of the shield, which curves up to hook behind the front bumper cover and leaves no opening for the oil to drip out of (at least on my '86 300E that's the case).

If this is the case, just remove the shield for a few days and observe the ground under the car for the location of the drips. It should probably drip even on level ground then, and hopefully you can trace it back to the source.

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