If it's only in the overflow tank that sure sounds to me more like someone accidentally added oil there.

Allan

On Mon, 23 Mar 2009 10:10 -0500, "Michael Sullivan" <sandwichhead@GMAIL.COM> wrote:
> > OK...checked oil level and right between low and full.  Pulled the
> > hose from the overflow to the expansion and noticed some blue
> > antifreeze drip out.  When I lowered the hose  I left about 1/8 cup
> > flow out and all blue. Opened the expansion tank and it was a little
> > warm but all blue. Stuck a stick in there and no oil on the stick.
> > I am stumped how oil is in the overflow and not in the expansion.
>
> I will admit, sheepishly, that when my kid was ready to leave for FL,
> I had him run it to Firestone(ya, I know) for a quick oil change.  I
> got the Delo 400 here for the change after he returned but haven't
> got to it yet. Wonder if someone intentionally did it? Kid says he
> topeed off antifreeze w/a pre-mix I sent with him, but did not touch
> the oil. hmmm.