Ford Focus ST Forum banner
91 oct
1-1 of 1 Results
  1. Focus ST Discussions
    hey guys just got an ST about a month ago and my AP finally came in! I was just wondering if running E30 on a stock ( cobb air filter, symposer delete, RMM.) ST is safe and okay???? I’m in the midwest and we only have 91 premium. Is that okay to mix for E30?
1-1 of 1 Results
Top