M119 - Oil Filter Cannister Failing to Drain?
'97 E420 with 68K miles; have used Mobil 1 since 7.5K miles. Lately, when renewing engine oil filter, have noticed that oil filter cannister remains full of oil, even if allowed to stand overnight. Don't recall it being like this when the vehicle was newer.
Is something that needs to be corrected? Any idea as to what's causing this? TIA.
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