The fuel or the fuel additives you use have absolutly nothing to do with either of those codes (or any other codes).
Try to be specific as to which code, exactly you have. The diagnostics are a bit different.
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!
