fuel additives TOYOTA PRIUS PLUG-IN 2013 Owners Manual

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6-1. Specifications
PRIUS PHV_OM_OM47787U_(U)
■Gasoline quality standards
●Automotive manufacturers in the U.S.A., Europe and Japan have devel-
oped a specification for fuel quality called the World-Wide Fuel Charter
(WWFC), which is expected to be applied worldwide.
●The WWFC consists of four categories that are based on required emis-
sion levels. In the U.S., category 4 has been adopted.
●The WWFC improves air quality by lowering emissions in vehicle fleets,
and improves customer satisfaction through better performance.
■Recommendation of the use of gasoline containing detergent additives
●To y o t a r e c o m m e n d s t h e u s e o f g a s o l i n e t h a t c o n t a i n s d e t e r g e n t a d d i t i v e s
to avoid the build-up of engine deposits.
●All gasoline sold in the U.S.A. contains minimum detergent additives to
clean and/or keep clean intake systems, per EPA’s lowest additives con-
centration program.
●To y o t a s t r o n g l y r e c o m m e n d s t h e u s e o f To p T i e r D e t e r g e n t G a s o l i n e . F o r
more information on Top Tier Detergent Gasoline and a list of marketers,
please go to the official website www.toptiergas.com.
■Recommendation of the use of cleaner burning gasoline
Cleaner burning gasoline, including reformulated gasoline that contains oxy-
genates such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in
many areas.
To y o t a r e c o m m e n d s t h e u s e o f c l e a n e r b u r n i n g g a s o l i n e a n d a p p r o p r i a t e l y
blended reformulated gasoline. These types of gasoline provide excellent
vehicle performance, reduce vehicle emissions and improve air quality.