What is the best way to keep my Ford Focus's engine running smoothly?

I recently purchased a Ford Focus and I want to make sure I am taking the best care of my car's engine. What are some tips and advice for keeping my engine running smoothly?

Regular oil changes and routine maintenance are key to ensuring your Ford Focus's engine stays in top condition.

Avoid harsh driving habits such as sudden acceleration and excessive idling, as these can put unnecessary strain on your engine.