What is the best way to maintain your Ford Fiesta's engine?

I recently purchased a used Ford Fiesta and want to make sure I am properly maintaining the engine. What steps should I take to keep it running smoothly?

Regularly change the oil and oil filter every 3,000-5,000 miles to keep the engine clean and lubricated.

Make sure to check and replenish all fluids, such as coolant and transmission fluid, on a regular basis. This will help prevent any potential issues.