yep its 5w30 my brother learnt hard way

as think someone else had put 10w40

in his mondeo 1.8 duratec

we did the service using the same and

eventually had sticky tappets and cause car to misfire and stop completely

then instead of buying tappets and us doing them

he had another mechanic friend to look at this

and they towed it down a duel carriage way destroying the engine