On a 3 cylinder 125hp turbocharged and supercharged engine I feel happier to follow Fords advise on oil. Ths car came with a 5 year warranty, which presumably demands servicing according to manufacturers guide.
Its listed as having a 20,000km service interval. Salesman advised doing an oil...
Ford spec 5w20 for all the Ecoboost engines in Europe.
Problem in Spain is that Castrol do not sell it here yet.
Local Ford dealer quoted me 90 euros for a 5 liter can, or 19 euro for 1 liter.
Buying the same oil in UK would have cost a quarter of that. Using 5w30 would invalidate the warranty...