Hi, I am trying to get help with my 9 5. It is a 1999 turbo. For the past few weeks, I have had a blue puff in my exhaust when I start in the morning. Two days ago, my oil and emergency light came on when I slowed to a stop. When I continued on, it went off. I went to the garage the next morning, and they checked the oil and said it was thin. After changing it, no more puff or lights. My turbo was replaced last summer, and my mechanic is ordering a part to check the oil pressure. Any thoughts?