420SEL oil does not drain from the filter housing
 

Please help - I tried to change the oil in my 420SEL and after removing the bolt and filter I took out the filter and the oil in the housing did not drain. I also drained the oil from the oil pan, and the oil in the filter housing still did not drain. Is this normal or are the hoses clogged?

Roman
87 300SDL
86 300SDL
86 420SEL
81 300D

When i do the same,i am left with about 1/4" of oil that i remove with a turkey baster.

Residual Oil
 

On a 1989 420 SEL, there is a hole on the bottom front top end of the filter housing. I normally have some oil left in the filter housing, that does not reach the bottom of the hole. I use a paper towel and push the oil around and then down the hole.

Thanks for the answers to my problem. In my case I had half of the filter housing with oil. I kept it open over night and in the morning I still have the same amount of oil. I removed the oil by sucking it from the housing. I installed a new filter, and pured oil in. When I turn the key to start the engine the meter for oil pressue was showing full pressure (3br). This is very suspisous.

Roman
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86 420SEL 228k