As long as it is running, & starting good, & getting good mileage, change them at 100,000 miles.
The 2002 Nissan Xterra has 16 valves.
The 2002 Nissan Xterra has a 5-speed manual.
The 2002 Nissan Xterra has an inline 4 engine.
The 2002 Nissan Xterra is a gas-powered vehicle.
The 2002 Nissan Xterra has double overhead cam (DOHC).
The curb weight of the 2002 Nissan Xterra is 3570 lbs..
The 2002 Nissan Xterra runs on regular unleaded.
The height of the 2002 Nissan Xterra is 6 ft. 2 in. (74 in.).
The 2002 Nissan Xterra's turning circle is 35.4 ft..
The 2002 Nissan Xterra is 14 ft. 10 in. (178 in.) long.
The 2002 Nissan Xterra has 32.8 in. of rear leg room.
The 2002 Nissan Xterra has 41.4 in. of front leg room.