Lexus 2013 ES350 Owner's Manual page 811

Non-recommendation of the use of gasoline containing MMT
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Some gasoline contains an octane enhancing additive called MMT (Methylcyclo-
pentadienyl Manganese Tricarbonyl).
Lexus 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 cluster may come on. If this hap-
pens, contact your Lexus dealer for service.
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 or
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driving uphill. This is normal and there is no need for concern.
NOTICE
Notice on fuel quality
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Do not use improper fuels. If improper fuels are used, the engine will be dam-
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aged.
Do not use leaded gasoline.
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Leaded gasoline can cause damage to your vehicle' s three-way catalytic convert-
ers causing the emission control system to malfunction.
Do not use gasohol other than the type previously stated.
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Other gasohol may cause fuel system damage or vehicle performance problems.
Using unleaded gasoline with an octane number or rating lower than the level
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previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
Fuel-related poor driveability
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If poor driveability is encountered after using a different type of fuel (poor hot start-
ing, vaporization, engine knocking, etc.), discontinue the use of that type of fuel.
When refueling with gasohol
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Take care not to spill gasohol. It can damage your vehicle' s paint.
ES350 300h_OM_OM33A01U_(U)
8-1. Specifications
I n f o r ma t i o n P r o v i d e d b y :
8