What is the best way to maintain the engine of a Ford Transit Custom?

I recently purchased a Ford Transit Custom and I want to make sure I am properly maintaining the engine. What are the best practices for maintaining the engine and keeping it running smoothly?

Regularly change the oil and oil filter to ensure proper lubrication and prevent build-up of debris in the engine.

Check the air filter and replace it if it is dirty. This will help improve engine performance and fuel efficiency.

Keep an eye on the coolant levels and make sure to top it off when necessary. This helps prevent overheating and potential damage to the engine.

If you notice any strange noises or warning lights, don't ignore them. Have a mechanic check it out to avoid potentially costly repairs.