Check the owner’s manual to see if your driving habits are considered to be “severe service” (most of us city drivers drive under ‘severe conditions’ by definition). This type of driving requires more frequent oil changes. Have the oil changed according to the owner’s manual, usually every 3-5,000 miles. For less wear and tear on older engines, there are excellent high mileage oils available that help with older engine ailments.
Most cars should get the tires rotated every 6,000 miles or so. Have the tech check your tires for abnormal wear and alignment or suspension issues. The costs are minimal and the benefits are huge…you’ll get the best mileage from your tires.