Copy and paste from another forum: VQ35DE equipped Pathfinders & QX4s, 2001-2004: Engine oil Drain & refill, with oil filter: 5.25 quarts Drain & refill, without oil filter: 5.07 quarts Dry engine (engine overhaul): 7.25 quarts Cooling system (including reservoir): 9.75 quarts (2.4375 ga...