i need some advice i have just brought a 2003 clio sport 172 & its always been run on optimax. what do people on here run there cars on?? the only problem is i dont have a local shell optimax garage so last time i just put normal petrol in it & to be fair it didnt seem to make much difference, but didnt no if that wasnt to good for my car?? or is there a optimax equivalent??