Fuel information. Lexus GS450H

Light bulbs

Exterior

Interior

Light Bulbs

Discharge headlights

*

Fog lights

*

Front turn signal lights

Rear turn signal lights

Back-up lights

Outer foot lights

Door courtesy lights

Vanity lights

Trunk light

A: D4S discharge bulbs

B: H11 halogen bulbs

C: Wedge base bulbs (amber)

D: Wedge base bulbs (clear)

*

: If equipped

8-1. Specifications

Bulb No.





W

35

55

7444NA 28/8

21

16

W21W

W16W

W5W







5

5

8

3.8

D

D

D

C

Type

A

B

C

D

D

791

8

GS450h_U (OM30D01U)

792

8-1. Specifications

Fuel information

You must only use unleaded gasoline in your vehicle.

Select premium unleaded gasoline with an octane rating of 91

(Research Octane Number 96) or higher required for optimum engine performance. If 91 octane cannot be obtained, you may use unleaded gasoline with an octane rating as low as 87 (Research Octane Number

91). Use of unleaded gasoline with an octane rating lower than 91 may result in engine knocking and significantly reduced performance. Persistent knocking can lead to engine damage and should be corrected by refueling with higher octane unleaded gasoline.

At minimum, the gasoline you use should meet the specifications of

ASTM D4814 in the U.S.A. and CGSB3.5-M93 in Canada.

■ 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.

■ Gasoline quality

In very few cases, driveability problems may be caused by the brand of gasoline you are using. If driveability problems persist, try changing the brand of gasoline. If this does not correct the problem, consult your Lexus dealer.

■ Gasoline quality standards

● Automotive manufacturers in the U.S.A., Europe and Japan have developed a specification for fuel quality called the World-Wide Fuel Charter (WWFC), which is expected to be applied worldwide.

● The WWFC consists of four categories that are based on required emission levels.

In the U.S., category 4 has been adopted.

● The WWFC improves air quality by lowering emissions in vehicle fleets, and improves customer satisfaction through better performance.

GS450h_U (OM30D01U)

8-1. Specifications

793

■ Recommendation of the use of gasoline containing detergent additives

● Lexus recommends the use of gasoline that contains detergent additives to avoid the build-up of engine deposits.

● All gasoline sold in the U.S.A. contains detergent additives to clean and/or keep clean intake systems.

■ Recommendation of the use of cleaner burning gasoline

Cleaner burning gasoline, including reformulated gasoline that contains oxygenates such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in many areas.

Lexus recommends the use of cleaner burning gasoline and appropriately blended reformulated gasoline. These types of gasoline provide excellent vehicle performance, reduce vehicle emissions and improve air quality.

■ Non-recommendation of the use of blended gasoline

● Use only gasoline containing a maximum of

10% ethanol.

DO NOT use any flex-fuel or gasoline that could contain more than 10% ethanol, including from any pump labeled E15, E30,

E50, E85 (which are only some examples of fuel containing more than 10% ethanol).

DO NOT use gasoline containing more than 10% ethanol.

(15% ethanol)

(50% ethanol)

(85% ethanol)

● If you use gasohol in your vehicle, be sure that it has an octane rating no lower than

87.

● Lexus does not recommend the use of gasoline containing methanol.

■ Non-recommendation of the use of gasoline containing MMT

Some gasoline contains an octane enhancing additive called MMT (Methylcyclopentadienyl 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 happens, contact your Lexus dealer for service.

■ If your engine knocks

● Consult your Lexus dealer.

● 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.

8

GS450h_U (OM30D01U)