Hello, When I last made the oil change (at 130’000 km), I noticed that the 3rd candle was half covered with oil and the 4th complete. I guess now it’s due to the valve cover seal. Isn’t there a big thing to change, but how strong do I have to tighten the screws afterwards? Does someone have a table with the values in Nm? And if I’m right there, what does the heated ventilation for the crankcase look like? I guess that’s not in it… although there’s a heater in it, but would still be better if the defoliation was in it… Thank you