I used Petronas Syntium 7000 XS last year which cost me £26 for 4 litres, apart from looking like neat Irn-Bru, it transformed the way the car ran and sounded. Obviously had cheap crap in before. Will use again.
How do people transfer it from the drum to bottles? I dont have a garage so have to do it indoors and it could get messy. lol. Wife wont be happy. but its def good value for 90 odd quid for 20 ish litres of oil