no such thing cause damage if use RON95. good car with good engine can support up to RON92. in thailand their normal grade of fuel is RON92. premium 1 is RON 95. so msian shd not complaning much. only blame the car engine if you car cannot support RON95/92.

merc E class n bmw recommended fuel is RON95, Min is RON91.
but i heard proton wira having problem using ron95, so many ppl in the market says RON95 cannot use and will spoilt engine after sometime, maybe they are those ppl driving wira and maybe is rumours.
what say u