In support of construction efforts we run a fleet of International flat bed trucks. They are robust and stout as can be - they have 4 wheel disk brakes. The following photos are of the second caliper that has gone bad in the last six months. To our eyes it looks like the steel pistons have crystalized - the leading edges are dissolving into a powder. We have confirmed we are using the right brake fluid, and we have never had this problem with any other calipers in the fleet. Any ideas from the brain trust?
