2005 Lexus GX 470 Owners Manual - Page 577

ENGINE Oxygenates in gasoline Lexus allows the use of oxygenate blended gasoline where the oxygenate content is up to 10% ethanol or 15% MTBE. If you use gasohol in your Lexus, be sure that it has an octane rating no lower than 87. Lexus does not recommend the use of gasoline containing methanol. Gasoline quality In a very few cases, you may experience driveability problems caused by the particular gasoline that you are using. If you continue to have unacceptable driveability, try changing gasoline brands. If this does not rectify your problem, then consult your Lexus dealer. Gasoline containing MMT Some gasoline contain 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. NOTICE D Do not use gasohol other than stated above. It will cause fuel system damage or vehicle performance problems. D If drivability problems are encountered (poor hot starting, vaporizing, engine knock, etc.), discontinue its use. D Take care not to spill gasohol during refueling. Gasohol may cause paint damage. Fuel tank capacity 552 87 L (23 gal., 19.1 Imp. gal.)