I'm currently about to order a 2017 BRZ Sport-Tech. I will be daily driving this car, and am not intending to use it at the track (Not pushing my engine that hard). Will the car be SAFE ON 87 octane gas? I understand that I should be putting in 91 or 91 (in which I probably will anyways) to avoid detonation, I'm just curious in when gas prices are steep and my wallet is empty.