Hi,
@z12358 - Yes, there is a measure of Hygroscopy, but it is variable because of the mount of moisture which may be present in the air over time. A fun
Mr. Wizard-type experiment is to fill a cup to the brim with Brake Fluid and place it on a saucer outdoors. Come back in an hour and you'll find that the Brake Fluid has overrun the cup. This is because of the moisture it has absorbed...
The best measure is a Fluids Wet Boiling Point which is the Boiling Point of the Fluid when it is fully
Hydrated - cannot absorb any more moisture.
ATE Super Blue and Typ200 is Racing Fluid. Race Cars have their Brake Fluid changed before every race. ATE simply makes the Fluid in contrasting colors as a convenience. It could well be made Pink, but I don't think the contrast would be as good between Pink and Gold in all light conditions. Besides, Racers don't usually do
Pink...
Happy Motoring!... Jim'99
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