An error has been found in the J1704 10/2000 published standard. The following disclaimer explains the correction to the error:
As Balloted by the "Motor Vehicle Brake Fluids Committee" the October 2000 revision of SAE J1704 was intended to remove all references to zinc strips and associated zinc strip testing. However, the reference to zinc test in the test procedure 5.6 Corrosion was overlooked. This reference to zinc test strips will be removed in the next update.
This SAE Recommended Practice was prepared to provide engineers, designers, and manufacturers of motor vehicles with a set of minimum performance standards which covers the next level of performance properties above those of the present SAE J1703 brake fluid standard. These fluids are not intended for use under arctic conditions or in braking systems requiring the use of mineral oil based hydraulic fluid. These fluids are designed for use in braking systems fitted with rubber cups and seals made from natural rubber (NR), styrene-butadiene rubber (SBR), or a terpolymer of ethylene, propylene, and a diene (EPDM). These fluids are not designed to operate in a pumped or a clutch braking system, especially those hydraulic systems requiring a mineral oil based fluid.