2010 Lexus GS 450h Owners Manual - Page 593

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6-1. Specifications

GS_HV_U (OM30C81U)

June 30, 2011 9:20 am

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Lexus does not recommend gasoline containing MMT

Some gasoline contains octane enhancing additive called MMT (Methylcy clopen-

tadienyl Manganese Tricarbonyl).

Lexus DOES NOT recommend the use of gasoline that contains MMT. If fuel con-

taining MMT is used, your emission control system may be adversely affected.

The malfunction indicator lamp on the instrument cluster may come on. If this hap-

pens, contact your Lexus dealer for service.

NOTICE

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Notice on fuel quality

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Do not use improper fuels. If improper fuels are used the engine will be damaged.

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Do not use leaded gasoline.

Leaded gasoline can cause damage to your vehicle’s three-way catalytic convert-

ers causing the emission control system to malfunction.

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Do not use gasohol other than that stated here.

Other gasohol may cause fuel system damage or vehicle performance problems.

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Using unleaded gasoline with an octane number or rating lower than that stated

here will cause persistent heavy knocking.

At worst, this will lead to engine damage.

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Fuel-related poor driveability

If after using a different type of fuel, poor driveability is encountered (poor hot start-

ing, vaporization, engine knocking, etc.), discontinue the use of that type of fuel.

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When refueling with gasohol

Take care not to spill gasohol. It can damage your vehicle’s paint.