This is true but if your just trying to remove the fluid and not bleed all the brakes you can bleed thecaliper that's closest to,the master cylinder to it is quicker for the fluid to empty.The old school way is bleed the farthest caliper (wheel cylinder on drum brakes) from the master reservoir . then the other three working your way closer. But I think it was on a honda element, I actually read the manual and it was some different method/order. But if you haven't cracked any brake lines or replaced any parts, and are bleeding just for fluid replacement, dont think it matters the order so much. But you want to see clean fluid coming out of each brake. clean fluid in each caliper is kinda the end goal of the fluid replacement.
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