octane Lexus GS250 2014 Owner's Manual

2804-4. Refueling
GS350_250_OM_OM30E16E_(EE)
Opening the fuel tank cap
●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
Number 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.
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle
GS350_250_OM_OM30E16E_(EE).book Page 280 Tuesday, July 8, 201 4 7:11 PM

6348-1. Specifications
GS350_250_OM_OM30E16E_(EE)
Engine
GS250GS350
Model4GR-FSE2GR-FSE
Ty p e6-cylinder V type, 4-cycle, gasoline
Bore and stroke83.0 × 77.0 mm
(3.27 × 3.03 in.)94.0 × 83.0 mm
(3.70 × 3.27 in.)
Displacement2500 cm3 (152.6 cu.in.)3456 cm3 (210.9 cu.in.)
Valve clearanceAutomatic adjustmentDrive belt tension
Fuel
Fuel type
EU area:
Unleaded gasoline conforming to European stan-
dard EN228 only
Except EU area:
Unleaded gasoline only
Research Octane Num-
ber95 or higher
Fuel tank capacity
(Reference)66 L (17.4 gal., 14.5 Imp.gal.)
GS350_250_OM_OM30E16E_(EE).book Page 634 Tuesday, July 8, 201 4 7:11 PM

6488-1. Specifications
GS350_250_OM_OM30E16E_(EE)
Fuel information
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that only
accommodates 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
driving uphill. This is normal and there is no need for concern.
EU area:
Your vehicle must use only unleaded gasoline conforming to European
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 perf ormance, select unleaded gasoline with a
Research Octane Number of 95 or higher.
GS350_250_OM_OM30E16E_(EE).book Page 648 Tuesday, July 8, 201 4 7:11 PM