2011 Lexus CT 200h Owners Manual - Page 658

6-1. Specifications n Gasoline quality standards l Automotive manufacturers in the U.S.A., Europe and Japan have developed a specification for fuel quality called the World-Wide Fuel Charter (WWFC), which is expected to be applied worldwide. l The WWFC consists of four categories that are based on required emission levels. In the U.S., category 4 has been adopted. l The WWFC improves air quality by lowering emissions in vehicle fleets, and improves customer satisfaction through better performance. n Recommendation of the use of gasoline containing detergent additives l Lexus recommends the use of gasoline that contains detergent additives to avoid the build-up of engine deposits. l All gasoline sold in the U.S.A. contains detergent additives to clean and/or keep clean intake systems. n Recommendation of the use of cleaner burning gasoline Cleaner burning gasoline, including reformulated gasoline that contains oxygenates such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in many areas. Lexus recommends the use of cleaner burning gasoline and appropriately blended reformulated gasoline. These types of gasoline provide excellent vehicle performance, reduce vehicle emissions and improve air quality. n Non-recommendation of the use of blended gasoline l Lexus allows the use of oxygenate blended gasoline where the oxygenate con- tent is up to 10% ethanol or 15% MTBE. l If you use gasohol in your vehicle, be sure that it has an octane rating no lower than 87. l Lexus does not recommend the use of gasoline containing methanol. 666 CT200h_U (OM76004U)