Is Caltex Havoline Formula suitable for use in vehicles using unleaded gasoline?
Yes. Caltex Havoline Formula is formulated for use with both unleaded and leaded gasoline. In fact, the qualifying tests for API certification are run using unleaded fuel. Also, Caltex Havoline Formula is specifically formulated to protect emission control devices such as catalytic converters and oxygen sensors, which are often used with unleaded fuel.