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· Master Baiter
22,141 Posts
If you have to put reduced octane into the car, fill-up with the proper octane when you get to around ½ tank, three (93) or four (91) times.

First fillup: 50% proper gas
Second fillup: 75% proper gas
Third fillup: 87.5% proper gas

Your car has an active knock control strategy, so it will pull timing to prevent detonation. As a result, even after you get the majority of proper gas in the car, the vehicle may feel a bit "sluggish" while it slowly adds advance back in that it pulled due to reduced octane.
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