2010 Lexus SC 430 Owners Manual - Page 341

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6-1. Specifications

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Gasoline quality standards

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Automotive manufacturers in the US, Europe and Japan have developed a

specification for fuel quality called World-Wide Fuel Charter (WWFC) that is

expected to be applied worldwide.

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The WWFC consists of four categories that are based on required emission

levels. In the US, category 3 or 4 has been adopted.

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The WWFC improves air quality by lowering emissions in vehicle fleets, and

customer satisfaction through better vehicle performance.

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Lexus recommends the use of gasoline containing detergent additives

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Lexus recommends the use of gasoline that contains detergent additives to

avoid build-up of engine deposits.

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All gasoline sold in the US contains detergent additives to clean and/or keep

clean intake systems.

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Lexus recommends the use of cleaner burning gasoline

Cleaner burning gasoline, including reformulated gasoline that contains oxygen-

ates 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 perfor-

mance, reduce vehicle emissions, and improve air quality.