Toyota SIENNA 2011 Quick Reference Manual page 803

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Recommendation of the use of gasoline containing detergent additives
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Toyota 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 U.S.A. contains detergent additives to clean and/
or keep clean intake systems.
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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.
Toyota 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.
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Non-recommendation of the use of blended gasoline
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Toyota allows the use of oxygenate blended gasoline where the oxygen-
ate content is up to 10 % ethanol or 15 % MTBE.
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If you use gasohol in your vehicle, be sure that it has an octane rating no
lower than 87.
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Toyota does not recommend the use of gasoline containing methanol.
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Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methyl-
cyclopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of gasoline that contains MMT. If fuel
containing MMT is used, your emission control system may be adversely
affected.
The malfunction indicator lamp on the instrument panel may come on. If this
happens, contact your Toyota dealer for service.
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If your engine knocks
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Consult your Toyota dealer.
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You may occasionally notice light knocking for a short time while acceler-
ating or driving uphill. This is normal and there is no need for concern.
I n f o r ma t i o n P r o v i d e d b y :
6-1. Specifications
747
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