Anyone got any opinions on running 95ron vs 98/99ron (Tesco momentum, v-power etc) on standard maps as I noticed that on the fuel flap it states you can use either/or in it....only ever seen 95 stickers on fuel flaps before the Clio. What difference does it make if any? I've tried both on full tanks and can't seem to notice a difference...normally stick momentum in it anyways as apparently according to the folks at work it acts as a cleaning agent to a small degree....