There are already other posts on using higher octane giving same results
sunnyMAN
i never read the link provided above..lazy
but jus to contribute my 5 cents
high octane is not good at all...best is use recommended one..which is usually octane 95...reason: our ECU is tuned to the reocmmended octane..any higher or lower, the ECU will not be able to deliver to its best performance
KangZ
Some cars have smart ECUs that can tune the engine performance according to the octane of petrol used