How do I maintain my Ford Transit Custom's engine?

I recently bought a Ford Transit Custom and I want to make sure I'm taking care of the engine properly. What are some important maintenance tips and recommendations for keeping my engine running smoothly?

Regular oil changes are crucial for keeping your engine in top shape. Make sure to follow the recommended interval and use the correct type of oil for your vehicle.

Don't forget to check and replace your air filter regularly. A dirty air filter can decrease your engine's performance and fuel efficiency.

Keep an eye on your coolant levels and make sure to top up or replace the coolant when needed. This will help prevent your engine from overheating.

Regularly check and replace your spark plugs. This can help improve your engine's fuel efficiency and performance.