Hi guys, a new kid on the block here. I have had a clio cup 172 for about 5 months now & love it to bits. A place i visit, (its an island) has no super plus unleaded, i had to fill up twice with normal unleaded. I was told by chap i bought car from that you can do this in emergency's, said it may r****d the engine??? sure enough, something happened, i got greater miles per gallon, 40+. The engine seemed to get more noisey running normal unleaded, even after changing back to super. Seems ok now thou. Just wondering what other peoples experiences were, as i will probably have to do this on a few occassions.