octane Lexus IS250 2014 Owner's Manual

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4
Driving
IS250_EE(OM53C51E)4-4. Refueling
●Close all the doors and windows, and turn the engine switch off.
●Confirm the type of fuel.
■Fuel types
EU area:
Unleaded gasoline conforming to European standard EN228, Research Octane Num-
ber of 95 or higher
Except EU area:
Unleaded gasoline, Research Octane Number of 95 or higher
■Use of ethanol blended gasoline in a gasoline engine
Lexus allows the use of ethanol blended gasoline where the ethanol content is up to 10%.
Make sure that the ethanol blended gasoline to be used has a Research Octane Number
that follows the above.
Opening the fuel tank cap
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle

5409-1. Specifications
IS250_EE(OM53C51E)
Engine
Model4GR-FSE
Ty p e6-cylinder V type, 4-cycle, gasoline
Bore and stroke83.0 × 77.0 mm (3.27 × 3.03 in.)
Displacement2500 cm3 (152.6 cu. in.)
Va l v e c l e a r a n c e
(engine cold)Automatic adjustment
Drive belt tensionAutomatic adjustment
Fuel
Fuel type
EU area:
Unleaded gasoline conforming to European standard
EN228 only
Except EU area:
Unleaded gasoline only
Research Octane Number95 or higher
Fuel tank capacity
(Reference)66 L (17.4 gal., 14.5 Imp. gal.)

549
9 9-1. Specifications
Vehicle specifications
IS250_EE(OM53C51E)
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that only accom-
modates the special nozzle on unleaded fuel pumps.
■If your engine knocks
●Consult any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
●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.
Fuel information
EU area:
Your vehicle must use only unleaded gasoline conforming to European stan-
dard 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.