How to optimize fuel efficiency on a Nissan Patrol?

I recently bought a Nissan Patrol and started to notice that I'm spending a lot more on gas than I expected. What are some tips to improve fuel efficiency? Any specific driving techniques or maintenance recommendations?

Regularly check and replace your air filter. A dirty air filter can decrease fuel efficiency by up to 10%. Also, try to avoid speeding and aggressive driving, both of which can significantly decrease fuel efficiency.

Consider getting a tune-up for your Nissan Patrol, including a spark plug replacement. This can improve fuel efficiency by up to 40%.

Properly inflate your tires to the recommended PSI. Under-inflated tires can decrease fuel efficiency, while over-inflated tires can affect the handling and safety of your vehicle.