re: brake bleeding procedure

[Dana Loomis <dloomis@domain.elided>]

Scott Fisher advised:
>You *did* bleed the brakes by draining first both wheels on one side,
>then both on the other, yes?  Spider, Berlina and GTV
>dual-circuit braking systems require this

Why?  In the rear, the right and left brakes are both on the same circuit,
with only one line for both sides from the master cylinder to a junction on
top of the axle.  In front the right and left sides have separate lines,
although they are fed by the same section of the master cylinder.  I don't
understand why that configuration would require bleeding from side to side,
rather than rear to front, as on most other cars.

Dana
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