Why is RX MPG+ needed when all gasoline contains an EPA or CARB certified deposit control additive?
“Gasoline combustion results in the formation of engine deposits. The accumulation of deposits, in fuel injectors and on intake valves, typically result in increased emissions and reduced engine performance. Congress recognized the importance of effective deposit control additives in minimizing vehicle emissions. It required gasoline to contain deposit control additives, effective January 1, 1995, and provided the Environmental Protection Agency (EPA) with the authority to establish specifications for such additives. The Clean Air Act provides that gasoline contain certified additives at the minimum concentration or compliance level (also known as the lowest additive concentration (LAC) necessary to be effective. The end effect of these regulations is that all gasoline contains a deposit control additive. Most Suppliers have chosen to use the LAC level, including some who previously promoted the use of their gasoline by advertising the use of deposit control. Economic pressures caused
