my bad... this has a timing chain... please disregard my belt comment :P
my guess, maybe someone else has used one of those bars leaks, either in tablet form or pre-mixed in a small plastic bottle
i've cracked one bottle just to be curious a long time ago & that's what it look like inside that bottle
,,, but on the 2nd pic, that's not likely... that's waaay to brown
look inside this bottle and you'll see what i mean:
http://www.youtube.com/watch?v=U2LAKGgmY1k
skip to 8:30 to see the fluid...