Last night my mom and me accidentally put kerosene in our cars. We have the same car and she has about 4 or 5 gallons in hers and I have about 3 in mine. My car has made some knocking noises but that's about it. I heard you can fix it by putting premium grade gas in the rest of the tank. Would that work? I also heard that I can put a fuel injector cleaner in the tank as well. Would that work or is there anything else I can do?
There are two different trains of thought on this issue.
Kerosene is a volatile, like gasoline is, and should burn okay, but is low octane and may allow engine knock (as you have experienced). Some say that if you add premium grade gas to the tank, it will offset the octane difference and you will be okay to drive. Others say that it can cause damage to your catalytic converter, and that you should have it towed to a mechanic to drain the tank before driving again.
You should probably give your trusted mechanic a call to find out what they recommend. I would recommend that you drive the car as little as possible until you get an answer that satisfies you.
For additional assistance, please find an AskPatty Certified Repair Shop at http://www.askpatty.com/search/?type=all&m=30&q=&keyword= and they can help you diagnose and repair the problem.