Tom, Without doing the math as to what would be the resulting octane in the tank since it will depend upon the amount you add, you could check with some Sunoco stations to find out where you can buy some 110 octane racing fuel ( Called CAM-2 ; used by serious drag racers, etc.) and add some to the tank. It comes in leaded or unleaded and ONLY costs about $ 5.00 - 5.50 gallon. When you think about it, that's not such a bad deal when some people will pay $2 to $3 for an 16 ounces of an "octane enhancer" which may do more harm than good to your carbs. Straight stuff runs smooth and smells sweet out the exhausts !! Happy New Year to all. John Cote Guilford, CT. ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Autos. Everything you need to know about buying or selling a car. FREE Quotes, 360° Tours, Research, Blue Book, Compare Vehicles, Buy Used http://us.click.yahoo.com/kEZsdA/bwnGAA/YiGOAA/8LmulB/TM --------------------------------------------------------------------~-> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/