How to maintain the engine of my Ford Focus?

I recently bought a Ford Focus and I want to make sure I properly maintain the engine. What are some key things I should do to keep my engine running smoothly?

Regularly check and change the oil according to the owner's manual recommendations. This is crucial for the health of your engine.

Keep an eye on your coolant levels and make sure to flush and replace it every 2-3 years.

Don't ignore check engine lights or strange noises. Get them checked out by a mechanic as soon as possible.