All oils do there job even shit ones Thats if you change the oil every 2000 miles!

...All the Castrol/Mobil 1/Sikolene are designed to keep good for 20k odd miles!So why use it when you change every 2-3k is madness

Although saying that i run Mobil 1 and chuck it every 2k miles I think i will go Sikolene next..fucking madness but what the hell aslong as WE feel we doin good