<human>:  What is the best way to keep a car running smoothly?
<bot>: The best way to keep a car running smoothly is to regularly check the oil level and change the oil and filter according to the manufacturer's recommendations. It is also important to regularly check the air pressure and treads of the tires, as well as to perform regular routine maintenance and inspection of the mechanical components. Furthermore, it is advisable to drive cautiously and avoid overloading the car with too many passengers or items.