Maybe only some of the '93 models got these bad parts?
Generic windex, sometimes diluted with tap water. I don't remember where I read it, but I do remember reading about someone else who had a problem with one or more of the windshield washer pumps.
I've also read (on this board) about other owners who have holes in the leather side bolster on the driver'* side seat. Cracking is normal, possibly followed by rips/tears as the wear continues, but I'm talking about holes poked through the leather from the inside.
There were already holes in the side of the driver'* side seat cover on my '93 ssei when I bought it, and the cause was something sharp - something white nylon/plastic behind the leather, and the 2 materials had rubbed together over the years. I inserted some padding between the sharp plastic and the leather to prevent further damage, but I haven't yet found a replacement seat cover. I got an estimate from an upholstery shop once, but they wanted $120 or so just to replace the damaged section with vinyl so I didn't approve that work.
'99 Bonneville SLE, white, 112,000 miles
'02 Park Avenue Ultra, white diamond pearl, 88,000 miles