Yes, it does matter. Your engine will knock if you use any grade lower than 91 octane.
However, if you have to use a lower grade 89/87 fuel, it will do no permanent damage to your car, as our engines have knock sensors that will dial back timing when knock is detected.
-Chike
Quote:
Originally posted by nismo887
the svx asks for premium gas, but does it really matter? other than the added performance.
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