How to maintain the reliability of my Volkswagen Golf engine?

I recently bought a used Volkswagen Golf and I want to make sure the engine stays in good condition. What should I do to maintain its reliability?

Regularly change the oil and oil filter according to the recommended intervals stated in the owner's manual.

Take note of unusual noises or vibrations coming from the engine and have it checked by a professional immediately.

Don't ignore warning lights and have them checked as soon as possible to prevent any potential engine damage.