Seat Creak on Street Machine GT

I posted on this subject in 2005. The really loud creak from the seat
was causing me grief, and it was getting worse. I was genuinely
concerned the seat was going to fail, but could find no cracks in the
seat.

However, I recently found out what it was. The skewers that hold the
seat in place had oil on them, and the oil had made its way onto the
face of the washers on the skewers which press on the seat mounting to
hold it in place.

Cleaned everything up, back to silent seat again.

In my experience one uses oil to stop squeaks, but in this case it was
causing it.

Any mechanically-minded people out there with an explanation?

Cheers

Pete

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Peter Grange