As you may know, I've owned my 1998 QX4 for about 18 years, I'm the 2nd owner.  It was a daily driver hauling kids around, driving all over the SouthEast and basically we just ran it through automated car washes.  I drove it to hunting camp sometimes.  Then it became the 3rd vehicle with some problems and then it started being neglected.  Now I've decided to keep it and I've been working on it.  It's running well and I've cleaned it throughly and fixed a few things here and there.  I wonder how