How do I properly maintain my Ford Mondeo engine?

I've had my Ford Mondeo for a few years now and I want to make sure I'm taking care of the engine properly. What regular maintenance should I be doing and how often should I do it?

Regular oil changes are key to maintaining a healthy engine. Make sure to follow the recommended schedule from your car's manual.

Don't forget to check and replace your air filter as needed. A dirty filter can cause your engine to work harder and decrease performance.

In addition to regular maintenance, listen for any strange sounds or performance issues. These can be early warning signs of bigger problems.