What is the best oil for my Ford Fiesta's engine?

I have a Ford Fiesta and I want to make sure I am using the best oil for its engine. I have been using regular 5W-30 but I've heard that different types of oil could improve its performance and longevity. Does anyone have any recommendations?

I have been using 0W-20 full synthetic oil for my Ford Fiesta for years and have had no issues. It makes the engine run smoother and I've noticed an improvement in fuel efficiency as well.

I am a mechanic and I highly recommend using full synthetic oil for your Ford Fiesta. It provides better protection and lasts longer than conventional oil.