I ordered a 16 oz bottle of magura blood. I absent mindedly put it aside for when I need to bleed again. I was tidying the bench when I spotted the clear side gauge that it wasn't pink in there. Blood has switched from pink to blue. Is it interchangeable? Do I have to drain out the old pink? It's been a while since first grade, do pink and blue make violet?
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Thread: Why is magura Blood BLUE?