What is the best oil to use for a Ford Fiesta ST?

I recently purchased a used Ford Fiesta ST and I want to make sure I am using the right oil for optimal performance. Can anyone with experience recommend a specific type or brand of oil that works well with the Fiesta ST's engine? I want to make sure I am taking care of my car and protecting its engine for the long run. Thanks!

I have been using Mobil 1 5W-30 full synthetic oil in my Fiesta ST and have noticed a significant improvement in performance and engine health. Highly recommend it!

I personally use Castrol EDGE 5W-20 full synthetic oil in my Fiesta ST and have had no issues. It's important to make sure you use the right weight and type of oil for your car, so I would suggest checking the owner's manual for recommended oil specifications.

I have heard great things about Amsoil Signature Series 5W-30 synthetic motor oil for the Ford Fiesta ST. It may be a bit pricier, but many car enthusiasts swear by it for its high quality and performance benefits.