The ultimate high-performance brake fluid.100% synthetic, polyglycol based DOT 4 formula for use in all DOT 3/4/5.1 fluid applications (do not mix/use with silicone or mineral oil based systems). This non-silicone product is packaged with nitrogen, not air, in order to provide the freshest brake fluid available.
For use in all systems which require D.O.T. 3, 4, 5.1 fluid
421F wet boiling point far exceeds typical DOT 3/4 (284/311F)