Hi there, it turns out there were multiple leaks, and you're right... the last one - I hope - is indeed a leak from the oil level sensor. I will try this myself, but can I ask: in your case it was a faulty sensor - could my sensor be okay but just needs reseating, sealing, tightening or something similar? My sensor looks quite new. I guess if I'm going to the trouble of opening the oil pan, I might as well replace it. Could you please link me to the part you got.