Quote:
Originally Posted by Ladykiller
So I accidentally filled the tank with 87 octane gas (I think, but need to find my receipt to verify). So now what do I do? I put in about 10 gallons with Stabil to top it off for winter storage. Do I have to drain the tank? Or can I get away with adding a bottle of octane booster? My ZL1 says Premium Required (not recommended unfortunately for this instance).
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I would run the tank to empty and since Washington state is 92 fill your tank. In the evening pull fuse 5 and 20. Let your car sit over night. In the morning reinstall the fuses. If you do not pull those fuses your fuel octane sensor system will be forever stuck on the lower fuel is my understanding. I was lucky to find this out several months ago and had been driving the car since purchase 18 months earlier when I purchased it. Guaranteed at some point the car had been fueled with lower octane. It was a Hertz rental car is why I know that.