Just keep in mind posted by Turbodog (CT) on April 28, 2008 at 11:20 AM
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absorb water rapidly. Here's the description of the ATE from IPP's site: ATE® Super Blue (DOT 4) has a dry boiling point of 536F and a wet boiling point of 396F. ATE Super Blue is compatible and will mix with most DOT3, DOT4, or DOT 5.1 Fluids. This top-of-the-line product lies 20 °C over the DOT 5.1 standard and surpasses this standard in nearly all the other requirements as well. This means that cars can go without a brake fluid change for up to 3 years while products with a lower wet boiling point have to be replaced considerably more often (e.g. DOT 3 products should be replaced annually).
The Motul RBF 600 seems to require frequent replacement, which is why I chose to steer clear of this fluid.