What is the best oil to use for a Ford Focus?

I recently purchased a Ford Focus and I want to make sure I am using the best oil for it. I've read conflicting information online and I'm not sure what to believe. Can anyone recommend the best oil for a Ford Focus?

I am a huge fan of the Mobil 1 Synthetic oil for my Ford Focus. It provides excellent protection and improved fuel economy. Highly recommended!

I have used Pennzoil Platinum Full Synthetic oil in my Ford Focus for years and have never had any issues. It's a bit pricey but definitely worth it.