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Old 03-09-2014, 04:28 PM
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Join Date: Sep 2009
Posts: 154
W201 1989 190D Oil Level Sender Leak, not o-ring? 602

I replaced my oil level sender o-rings about a year ago, but now have a leak there again.

I had replaced both the o-rings:0159973948 and the 0179975848.

Does this mean that I should try the o-rings again, or that I should replace the sender?

190D 76k miles
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W201 1989 190D Oil Level Sender Leak, not o-ring? 602-2014-03-09-11.31.02.jpg  
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Old 03-10-2014, 02:09 AM
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Join Date: Mar 2009
Location: San Diego
Posts: 2,862
It could be leaking from the center of the oil level sensor. It is prone to hair line crack. You can replace it. Alternately is to clean it very very well and fill the void with RTV. It should work as there is no pressure.
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details.

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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Old 03-10-2014, 11:15 AM
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Join Date: Sep 2009
Posts: 154
Have ordered a new one, but will take a look for cracks in the old one! Thanks.
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