Originally Posted by 02TBSteve

Have had my 2005 Crossfire Limited convertible for a year and a half and have NEVER PUT ANYTHING BUT 89 OCTANE REGULAR FUEL IN IT and it runs perfectly. It had 7,900 miles on it when I purchased it and now have 15,739 miles on it. I also have had two 2002 Thunderbirds and presently a 2004 T-Bird that supposedly require premium fuel and have never put anything but regular in them.....NO PROBLEMS. So save yourselves some $$$$ and try regular.