Hi folks anyone know if it is likely that a blistering and weeping engine oil sump could become an expensive leak on the move? My friend has a Hyundai Coupe S with an expensive oil habit. It isn't burning any and the gasket looks fine and there are no real leaks when parked. Is the sump easy to replace in situ? On the face of it , it looks like I should remove the longways strut under the engine and the sump change should be easy, Have I overlooked something?