Can glycerol be used in brake fluid?

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Offline Nanag

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Can glycerol be used in brake fluid?
« on: 11/01/2014 16:23:49 »
whether glycerol can be used in brake fluid DOT 3 ?  Any references on this subject ?
« Last Edit: 02/02/2014 22:49:38 by chris »

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Offline CliffordK

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Re: Glycerol in brake fluid
« Reply #1 on: 11/01/2014 18:32:27 »
What is your goal?
DOT 3 brake fluid is a mix of a bunch of glycols.  It is water soluble. 

Glycerin is also water soluable, so it likely is compatible with brake fluid.  However, it has a relatively high freezing point (64.04F (17.8C)).   Would it precipitate out in cold weather?

What is your source of glycerin?  Is it salt & contaminant free?  The sludge from biodiesel production would need to be purified before being used.