I'm looking at a 2013 Cruze Eco with 143k mi. I have concerns about the life of the turbo and the life of the clutch. The car drives out very well. There appears to be a very small oil film on the exhaust pipe at the flange. Is this a sign of an oil leak at the turbo? Or is this just a film from a fresh oil change. I didn't check out the location of the oil filter. Also the car is very well kept and mechanically maintained. What kind of life-in miles- should i expect to get from the clutch and turbo?