They come with a light film of oil which burns off.
Having run a non turbo map for a while stock boost is enough for now on greasy roads. Will up the boost on the weekend. Meth when the current screen wash runs out!
Car: 2010 Jaguar XFR (Stock - For now)
Gone but not forgotten: Highly Modified E90 335i LCI M Sport Manual (circa 480BHP/500lb ft)