2010 Lexus IS 250 Owners Manual - Page 627

550

6-1. Specifications

■

Lexus does not recommend gasoline containing MMT

Some gasoline contains octane enhancing additive called MMT (Methylcyclopen-

tadienyl Manganese Tricarbonyl).

Lexus DOES NOT recommend the use of gasoline that contains MMT. If fuel con-

taining MMT is used, your emission control system may be adversely affected.

The malfunction indicator lamp on the instrument cluster may come on. If this hap-

pens, contact your Lexus dealer for service.

NOTICE

■

Notice on fuel quality

●

Do not use improper fuels. If improper fuels are used the engine will be damaged.

●

Do not use leaded gasoline.

Leaded gasoline can cause damage to your vehicle’s three-way catalytic convert-

ers causing the emission control system to malfunction.

●

Do not use gasohol other than that stated here.

Other gasohol may cause fuel system damage or vehicle performance problems.

●

IS250C: Use of unleaded gasoline with an octane rating lower than 91 may result

in engine knocking. Persistent knocking can lead to engine damage and should

be corrected by refueling with higher octane unleaded gasoline.

●

IS350C: 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.

■

Fuel-related poor driveability

If after using a different type of fuel, poor driveability is encountered (poor hot start-

ing, vaporization, engine knocking, etc.), 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.