Moin , Have a problem Au Not existing Opel Astra G 1.6 16 V XEL 101 Ps Km 237500 Km run. co content in heard idle 0,480 would have to be 0,30. Passed idle. Engine oil 5w30 Drin. He smokes if man gives gas up 6000 rpm and immediately lets go , then back comes blue smoke out . Have also already asked workshop said piston rings defective . Compression 1 cylinder 15 bar , 2 cylinders 14 bar , 3 cylinders 14 bar , 4 cylinders 15 bar . New cat is in now have noc hmal 15 w 40 oil in it. Tuesday to tuv. Question to you I can still continue driving as long, want to drive soon on vacation. Or prefer Before piston rings and restock. Or just piston rings. What have you made for suggestions experience with oil burning engine. Greetings jochen In advance Thank you