Looks like Bar Heavy duty stop leak to me, the stuff with the black pellets. If it is, it should flush out. Perhaps someone put to much in.  I have flushed and changed my antifreeze every 2 years for about 8 years know and put 1/2 bottle of Bars Heavy Duty (1/2 pellets 1/2 black fluid) with no problems.
  A couple of weeks ago I thoroughly flushed the  coolant and this time  I'm trying the Subaru stop leak (1 bottle). So far so good. Does look better than the bars, hope it works as well. (thanks list!)
  Steven

neil N <musomuso@GMAIL.COM> wrote:
  Hi all.

Hopefully people aren't getting fed up with my questions!

So..... I started pulling stuff off my 1.9 WBX.

Found this stuff:

http://vanagonlinks.googlepages.com/coolantsludge

in the coolant reservoir.

Is it a sign of oil in coolant?

If feels like "dirt" if anything. I didn't see any other signs of
coolant in the system

If anyone can "ballpark" what that stuff is, and if it's just normal
sludge that gets deposited over long term use, I'd appreciate it.

Thanks!

Neil.

--
Neil Nicholson. 1981 Air Cooled Westfalia -
"Jaco" (Bustorius) http://web.mac.com/tubaneil

Engine swap beginings: http://musomuso.googlepages.com/home

---------------------------------
Be a better pen pal. Text or chat with friends inside Yahoo! Mail. See how.