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I'm 17 and I have one of those bitter Dads who refuses to use any gas but regular, even when I show him the BRZ manual, countless discussions online, and my accounts of the BRZ computer detecting a "knock" and cutting signals from the gas pedal until I fully release, and how I believe the engine knocked once last week. It has cut the throttle several times, almost causing two accidents over the past month. Over the past month I have used nearly 2.5 tanks of 87 octane gas, because the dealer inserted that gas and my dad refuelled the BRZ without my knowledge with a 1/2 full tank.
I'm finally putting my "foot down". I got my mom to scream and nag until my dad complied. Now I'm filling the tank with 92 octane from Costco tomorrow, with about 1/8 tank of 87 octane left over from previous fill-ups.
I'm hope to create a discussion in the next 3 weeks on my observations before and after, taking into account mpg, dollar/mile, throttle cuts, performance, and perhaps feel of the car. I hope for the best.
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