Check all fluids, including engine oil, power steering, brake and transmission as well as windshield washer solvent and antifreeze/coolant.
Check the hoses and belts to make sure they are not cracked, brittle, frayed, loose or showing signs of excessive wear.
Check the battery and replace if necessary. Make sure the connection is clean, tight and corrosion-free.
Check the brake system annually and have the brake linings, rotors and drums inspected at each oil change.
Inspect the exhaust system for leaks, damage and broken supports or hangers if there is an unusual noise. Exhaust leaks can be dangerous and must be corrected without delay.