[BSL110CM]

Hi guys,
I had to replace Eccentric Shaft Sensor at 50K. In 2 months I got cylinder 3 misfire (P0303 is the only code). I've swapped spark plugs and coils, cleared the error code. I feel misfire, but no SES yet, investigating… Just in case I unplugged Eccentric Shaft Sensor connector and noticed oil residue on the connector and on the sensor. My question is whether the oil leak could be due to the gasket around Eccentric Shaft Sensor (which I also replaced 2 months ago), or somehow the Sensor itself is leaking.

Thanks in advance.