Soryy for this one here. Wife has a '97 Honda 4x4 300, when I check the rearend fluid it is always brown and seems muddy but not realy over filled. I have changed it a couple 3 or 4 times and after a ride it's the same. It is not leaking anywhere. We have only had it about 8 months and the oil was real dirty and watery when we got it. I am not sure if I am getting all of the old oil out each time, maybe it's just residue. Any ideas would be great.