How to properly maintain a Vauxhall Insignia engine?

I recently purchased a Vauxhall Insignia and I want to make sure I am taking proper care of the engine. What are some important maintenance tasks I should do?

Regularly check and change the engine oil according to the manufacturer's recommendations to ensure proper lubrication.

Make sure to also check and replace the engine air filter as needed to keep dirt and debris out of the engine.

Inspect the engine belts and hoses for any signs of wear or damage and replace them if necessary.

Pay attention to any warning lights on the dashboard and have them checked by a professional if they appear.

Regularly monitor the engine coolant and top it off if needed to prevent overheating.