Yup... was going to put up a web page with it all in, but ICBA
So, looking at the IS200 AUTO BP SUL v BP UL - you paid 10.84% more for the SUL, but got 11.82% more miles.
:D
So I get better response, better sound and better MPG by sticking with BP Ultimate :D :D Thought so.
But then, as we have a Shell depo in Leeds, am I realy putting BP in or is it Shell SUL ?