* Ticking or tapping: This is often one of the first signs. It's the sound of metal components lightly contacting each other.
* Knocking: A louder, more forceful knocking sound indicates more serious wear and damage.
* Rattling: A rattling noise can suggest loose parts due to insufficient lubrication.
* Screeching or grinding: These are very serious and indicate significant metal-on-metal contact, potentially causing catastrophic engine failure.
The specific noise will depend on which parts are affected by the lack of lubrication. If you hear any unusual noises from your engine, especially accompanied by a low oil level warning light, immediately stop driving and check your oil level. Continuing to drive with insufficient oil will cause significant and costly damage.
