Dude, seriously. Overfilling the resevior will do nothing but make a mess. Shit, just at normal fill level, I get the resevior to blow shit all over the place when I do gymkhana, but that seems to be only common on JDM s13's. And even if you let it drain all the way, what the hell do you need to bleed it for? It's a looping system, the fluid is always flowing as long as the pump is spinning. Fill the resevior, cycle wheel. Repeat till it stops sucking down fluid and fills up. And for pressure relief, it'll bleed past the seal for the cap before anything else. That seal has no pressure hold at all, and it'll leak there first.
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