Does anyone know why it is that each time I pull my dipstick I get three very different readings. These can vary from needing a half quart or so to full. And that's after the car has sat all night. Initially it caused to overfill the crankcase. Now we just keep pulling till we get a "full" reading. This engine does not appear tu use oil and doesn't leak it. This isn't a huge problem but it is weird. Thanks.