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Like i said i don't actually know myself i'm just going on what i've heard and self assumption !.
however i don't think water retention comes ijnto it, it's more hydraulic pressure, every now and then *like most other things that run on hydraulics* the pressure will drop in turn the fluid will need to be topped up.
what i'm wondering is if the documentary was right in stating this fact, it would make sense that this is the reason they stand above the dish.
also the fluid loss takes place around the booklungs when humidity is too low seemingly, so this could be another reason.
again i'm only going by what i've heard and read so far. someone here must know a little more about this ??
however i don't think water retention comes ijnto it, it's more hydraulic pressure, every now and then *like most other things that run on hydraulics* the pressure will drop in turn the fluid will need to be topped up.
what i'm wondering is if the documentary was right in stating this fact, it would make sense that this is the reason they stand above the dish.
also the fluid loss takes place around the booklungs when humidity is too low seemingly, so this could be another reason.
again i'm only going by what i've heard and read so far. someone here must know a little more about this ??
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