easy fix long dripping oil on my wife's 2005 xterra 4.0 v6 4x4. Plan for this when changing your oil, removing the skid plate, removing the oil filter, unbolting the oil cooler with a 22mm deep drill hole socket to access the gasket. I had a faulty oil pressure relief valve behind the oil cooler which was a headache for the project, but mostly replacing that gasket isn't the point.