Does it ever work well
It came out quite dirty. I washed the filters again as they had picked up a little dirt but they were not that bad, certainly nothing like the fur coats they were wearing pre-hydraflush.I refilled with Total LHM+ which has a really bright neon-green flourescent colour. I was staggered when bleeding the brakes to see the old remnants of the Hydraflush come out to be followed by very bright green and very clean LHM
It certainly seems to have done the job. It seems to work by holding all the dirt in suspension if what came out was anything to go by.