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Reply to "Brake Fluid - will it absorb air?"

Yes, though I can't state so categorically. Given my background in chemistry I have a pretty good feel for gases dissolved in liquids. As a rule of thumb, when the pressure rises, more gas can be dissolved in a liquid.

I have a hard time believing this is your problem. If you have air in the lines, somebody is fooling you by telling you to temporarily pressurize the system to dissolve the gas. Once pressure is released the gas will come out of solution. This is due to a phenomenon called "equilibrium". This is also analogous to the "bends" that divers get, where excess air is dissolved into a diver's bloodstream under pressure, then released when the pressure is removed.
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