How do I properly maintain my Toyota Highlander's engine?

I recently bought a Toyota Highlander and I want to make sure the engine lasts as long as possible. What should I do to maintain it regularly and what are some red flags to watch out for? Any tips would be greatly appreciated.

Regularly check your oil levels and change it according to your owner's manual. Also, make sure to keep up with scheduled maintenance and address any warning lights immediately.

Inspect your belts and hoses for any signs of wear and tear, and replace them if necessary. And don't ignore strange noises or vibrations, they could indicate a serious engine issue.

Invest in high quality motor oil and fuel, and make sure to use the recommended octane level for your Highlander. And don't forget to regularly clean or replace your air filter.