Friend bought a 04 FXST, 4900 miles. I serviced it for her over the weekend. Trans had what appears to be gear oil, normal honey colored. Engine has some stuff that I had not see before. oil had several colors to it. Drain plug was a reddish color, Oil was mostly brown,reddish and had a tint of what looks like antifreeze green in it. Any idea what oil this was?