catalytic converter Lexus GX460 2017 Owner's Manual

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GX 460 _O M_ OM6 0F 6 8U _(U )8-1. Specifications
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knocking for a short time while accelerating or driv-
ing uphill. This is normal and
there is no need for concern.
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If improper fu els are used, the engine will be damaged.
●Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic converters
causing the emission control system to malfunction.
●Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performance problems.
●Using unleaded gasoline with an octane number or rating lower than the level previ-
ously stated may cause persistent heavy knocking.
At worst, this may lead to engine damage and will void the vehicle warranty.
■Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine knocking, etc.) is encoun-
tered after using a different type of fuel, discontinue the use of that type of fuel.
■When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.
GX460_OM_OM60F68U_(U).book Page 582 Wednesday, June 8, 2016 6:37 PM