Brake Fluid

[Agustin de la Calle <delacall@bcmp.med.harvard.edu>]

Hi,
I remember vaguely a helpful posting about the different brake fluids, 
i.e. DOT3-5. And I think having read that DOT3 would destroy rubber seals 
with time. Is that correct? My Haynes manual for MGs says I should use 
DOT3 as brake fluid. Isn't that odd?
 
I appreciate any helpful posting!!

Thanks,
        Agustin