On Jan 3, 5:51*pm, Dave wrote:
As title. My wife has just told me that some clothes have come out of
the washing machine with what looks a thick black substance on it. The
spots are one the corner of a pillow protector and her Scout shirt. I
have not yet tested for a suitable solvent, but I would like your
comments about what is the source.

TIA

Dave

If the door seal/tub shell gasket is black, it may have perished and
made the mark.