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1999 996 Minimum octane permitted for 996

Fuel System

Vehicle Information: Model: 996; Year: 1999; Body Type: Coupe; Total Mileage: 46000;

Should I drive car with a full tank of "regular" gas instead of "premium"? Gas station attendant mistakenly filled tank with regular. Drivers manual says minimum RON should be 95( 98 recommended). I think regular is only 93 or 94. Should I use an octane enhancer to boost octane level? Again drivers manual cautions against octane boosters. Should I drive car for 1/2 tank and then fill with with premium? Any suggestions?

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