What does oil coming from exhaust pipe mean?

Oil coming from the exhaust pipe typically indicates that engine oil is leaking into the combustion chamber, which can be caused by worn piston rings, valve seals, or cylinder walls. This can lead to increased oil consumption, blue smoke from the exhaust, and potential engine damage if not addressed. It's important to diagnose the issue promptly to prevent further complications. Regular maintenance and monitoring can help identify such problems early on.