Hi Gents,

I have a fairly bad oil leak that appears to be coming from the filter canister cover. I have gone ahead and ordered a new cover which has to come from Germany so that will be next week.

I've checked and rechecked the cover, replaced the o-ring twice now and made sure it was on tight but not too tight(its plastic so not very tolerant of over tightening) Recently, I noticed there is a notch at the very top thread. It looks like something broke, but perhaps it is there by design. My logic says thats where the oil is coming from.

Have any of you E300 owners have this issue; oil leaking from the canister cover?

Notch circled in photos

Attached Thumbnails

   

__________________
Treetops
06 E320 CDI 127K Miles
87 300TD 231K Miles

99 E300 269K Miles-Sold

Never had a leak like that. That does look like something broke...but I'm having trouble imagining how that could result in a leak when the rest of the threading is intact.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

The notch/busted thread is below the o-ring, so I have a hard time seeing how that alone could cause a leak. You might clean off the cover really well and inspect it for cracks.

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- Greg -
1973 220D, The Prodigal Benz
1974 240D