Hello, I drive my 4th Saab- currently a 9-5 2.3 T Bauj. 2005. The engine has 210 000 km. Before about 15000 km the control chain was torn, but could be repaired. The engine needs on 1.000 km about 1 liter engine oil. According to my dealer’s recommendation a new turbocharger was installed. No improvement. Before about 5 000 km the oil tank was cleaned which would not have been necessary: no oil sludge. When the engine starts cold there is a huge oil cloud. is there no oil wool at the start. So there seems to be something where oil in… (that’s the question) leaks over a long period of time. Does anyone have a suggestion what else I could do. Spark plug image is very good. (Measuring compression?)