How to properly maintain a Ford Transit Custom engine?

I recently bought a Ford Transit Custom and I want to make sure I am taking good care of the engine. What are some maintenance tips and regular checks I should do to keep the engine in top shape?

Regularly check the oil level and change it every 5000 miles.

Don't forget to replace the air filter every 15 000 miles for optimal engine performance.

Keep an eye on the coolant level and make sure to replace it every 2 years to prevent overheating.