How do I maintain the engine of my Nissan Patrol?

I recently purchased a Nissan Patrol and I want to make sure I am properly maintaining the engine. What are some important things I should be doing regularly to keep the engine in top shape?

Regularly change the oil and oil filter at the recommended intervals to ensure proper lubrication and cleanliness of the engine.

Inspect and replace the air and fuel filters as needed to prevent any buildup that can affect the performance of the engine.

Keep an eye on the coolant levels and make sure to flush and replace the coolant at the recommended intervals to prevent overheating and damage to the engine.