I drove the car for the first time yesterday and both times I drove it down my driveway (downhill) I noticed the oil smell. The vents were open and it was also noticeable at idle. The engine was warm at this point. There was no visible oil leaks, but I haven't checked thoroughly under the engine yet. Strange enough I didn't notice anything today. The previous owner has recently changed the head gasket, clutch and cambelt. I'm thinking it might could be caused by some oil leavings after this?