ok ive just had my car serviced and the oil he used was millers XFS 5w-40.
Now the guy who did my car runs a honda blackbird and says this oil performs better in that than mobil 1. His reasoning is the honda gearbox and engine oil is the same and with mobil 1 the gear change is stiffer after 1000-1500 miles and with the millers its ok for 2000-2500 miles.
Im not worried about this oil being in the car as its being remapped in the next couple of weeks then I will change the oil every 7,000 mile anyhow just after ppls opinions.
oh on the cost front he only charged me £20 for 5ltrs.