My Wife's Xterra has a tiny filter. Can you guys help me find a larger filter? Being a earlier model of this car it only has a 3.5 quart sump, small for a 6 cyl SUV, and am just thinking about things I can do to help extend an OCI a little. Right now I am running a full synthetic, but if I can buy larger filters for the same price why not?? Of course I will post my UOA's if I find something that works, for comparison with smaller filters. According to the Wix website: Wix part # 51356 20x1.5mm threads 3.402 hight 2.685 outer diameter Gasket 2.475 OD 2.173 ID 0.233 thick Thanks again.