fuel additives TOYOTA SEQUOIA 2008 2.G Owners Manual

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6-1. Specifications
6
Vehicle specifications
Fuel infor mation
■Fuel tank opening fo r unleaded gasoline
To help prevent incorrect fueling, your Toyota has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time while
accelerating or driving uphill. This is normal and there is no need for
concern.
■ Gasoline quality
In very few cases, driveability problems may be caused by the brand of
gasoline you are using. If driveability problems persist, try changing the
brand of gasoline. If this does not correct the problem, consult your Toyota
dealer.
■ Gasoline quality standards
●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.
● The WWFC consists of four categories that are based on required
emission levels. In the US, category 4 has been adopted.
● The WWFC improves air quality by lowering emissions in vehicle fleets,
and customer satisfaction through better performance.
■ Toyota recommends the use of gaso line containing detergent additives
● Toyota recommends the use of gasoline that contains detergent additives
to avoid build-up of engine deposits.
● All gasoline sold in the US contains detergent additives to clean and/or
keep clean intake systems.
Your vehicle must use only unleaded gasoline.
Unleaded gasoline with an Octane Rating of 87 (Research Octane
Number 91) or higher required for optimum engine performance.
At minimum, the gasoline you us e should meet the specifications
of ASTM D4814 in the U.S.A. and CGSB3.5-M93 in Canada.