Fuel Information - Lexus RX450H Manual

6-1. Specifications

Fuel information

EU area:
Your vehicle must use only unleaded gasoline conforming to Euro-
pean standard EN228.
For optimum engine performance, select unleaded gasoline with a
Research Octane Number of 95 or higher.
Except EU area:
Your vehicle must use only unleaded gasoline.
For optimum engine performance, select unleaded gasoline with a
Research Octane Number of 95 or higher.

Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your Lexus has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.

If premium gasoline is not available
If this premium type cannot be obtained, you can use unleaded gasoline with
a Research Octane Number as low as 91.
The use of such gasoline may cause the engine to knock or drastically
reduce output to protect itself while driving with a heavy load. To avoid this,
refill the tank with premium unleaded gasoline as soon as possible.

If your engine knocks

Consult any authorized Lexus dealer or repairer, or another duly quali-
fied and equipped professional.

You may occasionally notice light knocking for a short time while accel-
erating or driving uphill. This is normal and there is no need for concern.
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