Fuel Information - Lexus SC 430 2006 Owner's Manual

6-1. Specifications

Fuel information

Your vehicle must use only unleaded gasoline.
Select premium unleaded gasoline with an Octane Rating of 91 (Research
Octane Number 96) or higher for optimum engine performance.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the USA and CGSB 3.5-M93 in Canada.
Fuel tank opening for unleaded gasoline
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To help prevent incorrect fueling, your Lexus has a fuel tank opening that will
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only accept the special nozzle on unleaded fuel pumps.
If premium fuel is not available, you may temporarily use unleaded gasoline with
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an Octane Rating as low as 87 (Research Octane Number 91).
If your engine knocks...
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Consult your Lexus dealer.
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You may occasionally notice light knocking for a short time while accelerating
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or driving up hills. This is normal and there is no need for concern.
Gasoline quality
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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 Lexus dealer.
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