I have a 2004 audi a6 wagon. Less than 100 miles after getting my oil changed, the oil MIN light came on in the dashboard.

Should I go ahead and add more oil or is this the sign of poor mechanical work? I dont want to blame the mechanic though this is the first time he worked on the car.

 

Pull the dip stick out, what does it say?

If it is low, put a cardboard box flattened down under the engine overnight and see if it is leaking.