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  #1  
Old 01-28-2024, 10:22 AM
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Weird Oil Leak

Ok guys have a odd one here, I have a 2006 e53 with about 130k on it. Recently it starting leaking oil buy the cup full, however it only is doing it occasionally. I took the plates off cleaned it up and can't really see any trouble area. I sat it on fresh cardboard for two days in the garage but not a drop. I have oil spots all over my driveway from when it happens, any ideas?

Last edited by e53 guy; 01-28-2024 at 01:29 PM.
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Old 01-28-2024, 10:43 AM
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Usually the OFHG or the seal around the filler.

Cold ambient temps made mine worse.
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Old 01-28-2024, 10:46 AM
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Check near the A/C compressor area. The corner is notorious for an oil pan leak. Same for oil dipstick area.

Likely power steering fluid. Check the return hose. The OEM clamp will not hold on old brittle hoses. Check under the reservoir.
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Old 01-28-2024, 01:28 PM
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Pretty sure it is motor oil, I will check the power steering fluid shortly but as much as has been leeking it would probably be empty.
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Old 01-28-2024, 02:59 PM
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its motor oil, reservoir is still full. hasnt leaked in two days now
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Old 01-28-2024, 03:25 PM
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Turn it on. How tight is the oil filter cap? BTW - which motor?
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Old 01-28-2024, 03:31 PM
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Double checked the filter cap its tight and it doesnt look like it is coming from there at this point. 3.0 When it does leak it seems to leak the same amount each time or close to it, it isnt a continuous leak.
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Old 01-28-2024, 04:13 PM
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Are you sure it's not just pooling up on the stiffener plate and then dripping out of there when enough pools up in there?
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Old 01-28-2024, 04:17 PM
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Actually I didnt think of that, very good point! I have the plastic plate off now and the stiffener back on since you cant drive without it. I did clean it very good. I guees I will just have to monitor it and see.
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Old 01-28-2024, 05:42 PM
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Quote:
Originally Posted by Bdc101 View Post
Are you sure it's not just pooling up on the stiffener plate and then dripping out of there when enough pools up in there?

This is almost always why there's a surge. It's hard to see the OFHG leak but if oil is on the front of engine above the water pump it's most likely OFHG (also it's a very common leak).
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