Can't say Petronas only carries RON95.. I was pumping on RON97 (Primax 3) on the highway last night.
My personal experience (1 full tank of RON95)
- Didn't notice the performance loss, but change back to RON97 and the difference is obvious.
- My car occasionally jerks, shudders, the engine chokes and slow down and slowly die, with the check engine light on and trc light blinking. stopping by and restarting the engine and thingswent to normal. Happened to me like 3 times in only 1 full tank.
My advice? Try 1 full tank of RON95 first. It may work for you, but it definitely doesn't work for me.