So you are complaining about a problem that hasn't happen yet? Look around this website and you will find owners with 100k-200k miles on there trucks. You have had two Japanese cars lasting over 100k and 200k and then go on to say Jap cars are going down the shitter? If you are so worried about all these problems happening to you then go too www.autotrader.com and sell your X before anything happens to it and buy whatever else you want. Sorry if you aren't getting the responses you were looking for but this board is made up of thousands of happy Nissan Xterra Owners. Oh and at 90k you might want to look into replacing your timing chain before it's too late.