All these years and i never knew! Everyone I've ever heard talk about brake fluid having a finite lifespan have used the (apparently none-existent) word: 'hydroscopic' to help describe what it does when exposed to moisture. Even the spell checker on here tries to correct you by offering 'hygroscopic' as the top choice in its list of correct words you might have spelled wrong! Well, they do say you learn something new every day.

Thanks man.
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After years of moaning about immigrants now i am one...