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You can try the 87 or 91 if it knocks and pings then you need to go higher with the octane.
what do you mean by knocks and pings? I mean i put the 95 in it and it runs smoothly, sometimes when im going up my parking ramp it kicks but im sure its the car
Pinging it like a tinny rattling.
If it does it when you accelerate hard then use higher.
But if you always use 95 then you are fine.
If you want to try lower then see what happens.