Last oil change was September when i bought the car, done by ford dealership. What particular brand of oil do they use,? and what do you guys recommend to top up. don't want to void the warranty by using something ford would deem an 'unsuitable' oil.

Recommend away folks.

I would say they use Ford Formula E 5W30. My local Ford dealer has an offer of 5l for 21 quid.

To be honest any good quality oil would be fine, i would have thought. just check in the book what type is needed.

I personally use carlube tripleR, at each change, and never really need to top up