I have a very good idea what it is. It looks like what happens what coolant and oil mix. Since you have a 2000, there's a common problem with the cylinder head cracking, allowing coolant to get into the oil. After a while, the oil will start to look like that.
Please google "0331 Cylinder Head" and you will find a host of information regarding the issue. In short, it looks as though you will at least need a brand new cylinder head. However, since you may not know how long this issue has been present, your entire motor may be shot.
Please google "0331 Cylinder Head" and you will find a host of information regarding the issue. In short, it looks as though you will at least need a brand new cylinder head. However, since you may not know how long this issue has been present, your entire motor may be shot.