Is there any difference between these? I recently went to the Honda dealership to pick up some brake fluid and all they had was Genuine Honda Brake Fluid DOT 3. Apparently a Heavy Duty version exists as well, which my 2012 Civic manual calls for. Im sure there is likely little difference between the two, but does anyone know why they are labeled differently? The Heavy Duty version is much more difficult to find and the parts guy at the dealership said they only ever have the standard Honda DOT 3 in the service department.