QUOTE (BillTheEditor @ Aug 14 2008, 11:00 PM)

The Pelikan Super-Pirate is only effective 100% on Pelikan Royal Blue ink; it might work on other inks and other colors, but there's no guarantee.
Yes, Pelikan carefully says there is no guarantee and rightly so.
In my experience, quite a few of the blue inks labeled "washable" can be eradicated by the Pelikan Super-Pirat, including those from Waterman (Florida Blue), Montblanc, Aurora, Parker Quink, Lamy, Pelikan (old and new Royal Blues), and the old and new Sheaffer Skrip. I can't guarantee these results, for some of the same reasons Pelikan can't.
Not by mere coincidence, those same blue inks are vulnerable to being made to fade over the years by the sulfur in most paper. Aurora Blue is probably (unscientific statement) the slowest of them to fade because it is more saturated.