Hello, as always, a praise to the community. I am always fond of silent readers and really appreciate the forum! Now to my observation: Yesterday it was time and the service interval demanded for new oil and oil filter. I immediately changed the exhaust from Kat because it was there. I have always changed the oil myself for 3 years and is not difficult. As oil I filled in from Addinol 10W40 Semisynth. When I then drove a few km after the oil change , I noticed that the exhaust or exhaust smells like someone was sweating. There were some stickers on the pot and I thought it was coming. When I was driving another 30km and parked backwards I only noticed when I first gasped and drove back a building cloud and still this (not body but material) sweat odour. That’s never done my car in the 4 years! Whether by chance or not when I wanted to look in the engine room for the oil I had the handle zack the oil stick in the hand, i.e. red handle broken off from the steel stick. Hmm. I did not do anything yesterday evening and will drive today again. Now the first will surely ask for the oil level, which was actually yesterday not very high, but enough exact statements can also not be made with broken rod also… Nu still the obligatory: Volvo 850, ’95, 10V, petrol, speedometer at 370tkm, should be 400 meanwhile The question is now, I ha be the oil trap never cleaned, only the flame screen once 2 years ago, can I cause the often depicted problem with the oil trap and the overpressure by changing oil? Thank you Robert