Need the specifics to help answer.
How often do you really change the oil?
How does the filter look from the outside, you should be able to tell if it's clean and new from the outside.
Some motors will tend to darken oil quicker due to hot spots from poor design.
Oil that is not changed 3month/3000 miles will be more apt to give a dark color, sometimes immediatly.
Some oils are darker than others.
Oil may have not been fully drained.
Wednesday, February 14th, 2007 AT 7:56 PM