Testing an inexpensive brake fluid tester - "ITEQ" - $10.


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Apr 7, 2022
SRF: "very dangerous if not thoroughly flushed": how so?
It does not absorb water, meaning any H2O in the system will cause corrosion/mechanical issues. Water in the system would vapourize and cause the vapour lock issues This implies that you need to flush it often, but race folks would do this anyway. You get higher boiling points, with this caveat.

For street use where fluid is left in for a few years (or more), you would not want Castor SRF, but rather a typical DOT 3, 4, 5.1 which absorb moisture and prevent rust.
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