What is the best way to maintain and improve the performance of my Ford Focus engine?

I recently purchased a Ford Focus and I want to make sure I am doing everything I can to keep the engine running smoothly. What are some tips and tricks for maintaining my engine and potentially boosting its performance?

Regular oil changes are essential for maintaining engine health. Make sure to use the recommended oil for your specific model of Ford Focus.

Check your air filter regularly and replace it when needed. A clogged air filter can significantly impact engine performance.

Consider upgrading to a high-performance air filter or cold air intake to increase horsepower and fuel efficiency.