Hi there, I Have p307 1.6 90hp 2006 that gives a lot of white smoke at startup and when idle while cold also it has rough idle when engine is cold . It's like that since I bought it 4 m ago. I checked coolant level and it's not changed at all, after 7000 KM of driving it spent some oil like 2 squares markings at dipstick. I scanned for faults with some obd2 tool and it showed codes in picture below. I will change, oil and filters in couple of days. Any other suggestions?