2003 Nissan Maxima Owner's Manual - Page 246

GAS STATION INFORMATION FUEL RECOMMENDATION: Use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti-Knock Index) number (Research octane number 91). For improved vehicle performance, NISSAN recommends the use of unleaded premium gasoline with an octane rating of at least 91 AKI number (Research octane number 96). ENGINE OIL RECOMMENDATION: ¼ API Certification Mark ¼ API grade SG/SH, Energy Conserving I & II or API grade SJ or SL, Energy Conserving ¼ ILSAC grade GF-I, GF-II & GF-III ¼ SAE 5W-30 viscosity oil is preferred for all ambient temperatures. SAE 10W-30, 10W-40 viscosity oil may be used for ambient temperatures above 0°F (−18°C). See "Capacities and recommended fuel/ lubricants" in the "9. Technical and consumer information" section for engine oil and oil filter recommendation. CAUTION Using a fuel other than that specified could adversely affect the emission control systems, and may also affect warranty coverage. Under no circumstances should a leaded gasoline be used, since this will damage the three way catalyst. For additional information, see "Capacities and recommended fuel/lubricants" in the "9. Technical and consumer information" section. COLD TIRE PRESSURES: See tire placard affixed to the center console lid. NEW VEHICLE BREAK-IN PROCEDURES RECOMMENDATION: During the first 1,000 miles (1,600 km) of vehicle use, follow the recommendations outlined in the "Break-in schedule" Information found in the "5. Starting and driving" section of this Owner's Manual.