What is the best way to maintain my Ford Focus's engine?

I recently purchased a Ford Focus and I want to make sure I am taking care of the engine properly. What maintenance steps should I be taking to ensure my engine stays in top shape?

The most important thing to remember for maintaining your Ford Focus's engine is regular oil changes. This helps keep your engine running smoothly and can prevent costly repairs down the road.

In addition to oil changes, you should also check your air filter regularly. A dirty air filter can decrease your engine's performance and even lead to damage. Make sure to replace it every 15,000-30,000 miles.