onehundred80
Here in The UK if you do searches as to what engine oil to use with many companies and garages it returns 5w-30 for the Crossfire or 0w-30.

Engine Oil | Car Engine Oils and Diesel Oils for any car
Halfords | Bikes | Sat Nav | Car Audio | Car Seats | Car Maintenance - They say 5w-40
Car Servicing | MOT Testing | Brakes | Clutches | Gearboxes | Exhausts | Tyres | Cambelts | Mr Clutch Autocentres

They obviously is slack communication here in England as to which oil is the best and appropriate to use!

onehundred80 - I did a lot of research regarding the oil types to put across the forum and it appears many have 5w-30/40 in there cars.