and there was some semi-substantiated info regarding fuel and injector failure. Seems chevron's detergents in particular are somewhat 'abrasive' on our cars sensitive injector insulation. IE: I used chevron exclusively for 3 years and went through 9 injectors in that time. Have used anything but chevron or mobile since then (2 years) and haven't had any of them fail. Could be isolated...but I'm a bit superstitious. Just my .02.