Oh - I should note that the AP551 is DOT3 though, not DOT4 as our systems recommend. However, the dry boil point is 257C, or 527F degrees which is much higher than the 446F required to be DOT4 and the 518F to be DOT5.1, so its completely safe (and it is NOT silicon based BTW). Wet boil is what makes it DOT3 and really, who cares about WET boil if you change the brake fluid often enough...
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