What brake fluid are you using in your hachi ?

[jamiemirror]

Ivan141 Wrote:http://www.xs11.com/tips/maintenance/maint1.shtml

Strange - this guy says "don't use DOT 5 fluid" - in short.
He describes very bad things possible to occur - but how for example the water will go in brake system when the fluid is non-hygroscopic ? The only way can be if you pour it in the master brake cylinder tank (a joke :-)).
Also reading things about calipers etc - are there some real stories about such a problems ?
PS: Anyways I don't plan to use DOT 5 but I learned interesting facts from this link - and some of them are anxious !