1998 Nissan Frontier Owner's Manual - Page 185
1998 Nissan Frontier Manual
Page 185 highlights
Schedule Two Abbreviations: R = Replace MAINTENANCE OPERATION Miles × 1,000 Perform at number of miles, kilometers or (km × 1,000) months, whichever comes first. Months Emission control system maintenance Drive belts Air cleaner filter Positive crankcase ventilation (PCV) filter EVAP vapor lines Fuel lines Fuel filter Engine coolant Engine oil Engine oil filter Spark plugs See NOTE (1)* See NOTE (2) R R R R R R R R [R] R R R R R R R* R R [R] See NOTE (1) I* [R] [R] I* I* I* [R] [R] I* I* 7.5 (12) 6 15 (24) 12 22.5 (36) 18 I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only MAINTENANCE INTERVAL 30 (48) 24 37.5 (60) 30 45 (72) 36 52.5 (84) 42 60 (96) 48 NOTE: (1) If vehicle is operated under extremely adverse weather conditions or in areas where ambient temperatures are either extremely low or extremely high, the filters might become clogged. In such an event, replace them immediately. (2) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months. * Maintenance items and intervals with an are recommended by NISSAN for reliable vehicle operation. The owner need not perform such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and intervals are required. 9-8 Maintenance