How do I maintain my Nissan Patrol's engine?

I've recently bought a used Nissan Patrol and I want to make sure the engine stays in good shape. What steps should I take to properly maintain the engine?

Regular oil changes are key to maintaining your Nissan Patrol's engine. Make sure to check and change the oil every 3,000 miles.

Keep an eye on your engine's temperature gauge. If it starts to overheat, pull over and let it cool down before resuming your drive.

Don't forget to check and replace the air filter. A dirty air filter can cause poor engine performance and decreased fuel efficiency.