I usually empty the reservoir first, give it a good clean out then fill with fresh. No so easy if you don't have remote reservoirs I suppose. Its usually only the clutch one that has the black sediment but it doesn't hurt to do the brake one the same. Then you've only got the old stuff in the lines to bleed out.
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Roast Beef Monster!
Termignoni and Bucci - Italian for pipe and slippers!
S4 Fogarty, S4R 07T, 748, Series 1 Mirage
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