The most critical maintenance for a vehicle is the engine oil change and the transmission fluid check. Auto owners should consult their owner's manual for complete list of maintenance schedules and keep in mind that the schedules provided should not be exceeded.
Along with the owner's manual is typically a maintenance log. A maintenance log is a good place to document all service performed on your vehicle. You should note exactly what was done and the date and mileage. Sometimes there will be several part choices for your vehicle, so this is also a good place to document the part numbers of any replacement parts installed on your vehicle.
A maintenance schedule starts with having a good system of record keeping. In addition, having all maintenance documented helps maintain your car's value.
Check the maintenance schedules for the following: replacement of engine oil + oil filter, engine air filter, engine timing belt, engine coolant, drive belts, transmission fluid + filter change, and tire rotation.