read it somewhere before that RON95 not suitable for engine with 10:1 compression and above that doesn't have knocking sensor.
mivec compression already 11:1, putra and sgti (4G93 DOHC) is 12:1 compression. even though proton car have knocking sensor and the ecu will retard the timing but it means the engine would not run on it's optimum performance.
mivec compression already 11:1, putra and sgti (4G93 DOHC) is 12:1 compression. even though proton car have knocking sensor and the ecu will retard the timing but it means the engine would not run on it's optimum performance.