I've been using Castrol Magnetec 5w30 fully synth for the last 9 years on my various CTR'S and do trackdays with it and the oil is spot on. Good oil and good price.
i thought 10w40 was the correct grade oil to use?
i bought the 4L for £17.50 yesterday, good job as i was just under minimum so put a litre in which would of cost me £16.99 on its own!
You can use 10w40 but 5w/30 is better as its fully synth.
took back the turbo deisel oil i bought last week by accident . bargin.