Re: bad gas... octane booster???
Any of those octane boosters you buy won't do crap for your car. They're a gimick...expensive...but don't work.
Best best is to drain and start over, other option is to add some torco to fix the issue. Not cheap either way but definitely the best way.
Look on the bottle and see how much it will take to actually raise the octane rating of 15 gallons of gas. You'll spend $100 for 1 point raised in octane rating.
"I'm not driving too fast...just flying too low"
-03 SB Cobra vert- 2552 of 5082 Born 02/25/03
90 7up vert - new project-07 DSG Focus -DD