Quote:
Originally Posted by foxhu
you should put a sign at your tank saying 91+ ONLY!
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Already there
Quote:
Originally Posted by Narcoden
Mine came with a sticker in the fuel door that says to use premium. I don't know the exact wording but there is a sign that says to use higher octane already.
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+1. To the OP--Assuming your father is apologetic about this, he owes you a tank of PREMIUM. The car will be fine, one tank of 87 won't make a difference in the long haul. Just drive the car like your grandparents for the remainder of this tank (no heavy acceleration, no revving of the engine, etc.). On the plus side, you may get slightly higher than average gas milage even with the regular gas.