Island relating to the duties and responsibilities of the Director for the waters of the state, and in. accordance with the requirements of Chapter 42-35, Administrative Procedures Act. Rule 3. - SUPERSEDED RULES. Upon adoption, these rules and regulations will supersede Water Quality Regulations for Water Pollution.
Using low octane fuel in a high octane engine will result in severely reduced performance because the engine will attempt to adjust to the lower octane gasoline. In extreme cases, or with prolonged use of low octane gasoline in these engines, pinging or pre-detonation can occur and can eventually destroy your engine.
A recent question about octane and a visit to a paint store made me wonder: Can I add Xylene to my gas tank to boost octane? My car calls for 89 or better octane, but I can usually get away with using 89 every second or third fill-up without getting noticeable spark knock. On the rare occasions I've filled with Sunoco 93 octane fuel, I can smell xylol as I'm filling my car.