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Dot4 Brake Oil Testing Parameters and Test Methods
PARAMETERS TEST METHODS
Equilibrium Reflux Boiling PointºC (ERBP)
Wet Equilibrium Reflux Boiling Point º C
Specific Gravity @ 20 º C
pH Value
Viscosity @100ºC
Viscosity @-40ºC
ASTM D 1120
ASTM D 1120
ASTM D 4052
ASTM D 1287
ASTM D 445
ASTM D 445
SPECIALIZED TESTS IN Dot4 Brake Fluid
PARAMETERS TEST METHODS
Fluid Stability (ERBP
Change)
High Temperature ºC
Chemical º C
SAE J1703 5.3.1 and 5.3.2
Or
571.116 US Dept of
Transportation S6.5.3 and 6.5.4
Fluid Stability (ERBP
Change)
High Temp+Chemical
(Both Test together)
SAE J1703 5.3.1 and 5.3.2
Or
571.116 US Dept of
Transportation S6.5.3 and 6.5.4
Effect on Rubber
(SBR Rubber)
70 º C Swell (mm)
Softening (IHRD)
Disintegration
120 º C Swell (mm)
Softening (IHRD)
Disintegration
SAE J1703 5.11.1 and 5.11.2
Or
571.116 US Dept of
Transportation S6.12
Effect on Rubber
(SAE J1703)
(EPDM Rubber)
70º C Volume Change(%)
Softening (IHRD)
Disintegration
120º Volume
Change(%)
Softening (IHRD)
Disintegration
SAE J1703 5.11.3 and 5.11.4
Evaporation Loss
@100º C (%w/w)
Residue Pour Point (ºC)
Residue Texture
571.116 US Dept of
Transportation S6.8
Fluidity and
Appearance at Low
Temperatures
-40º C Appearance
Flow Time (Sec)
-50º C Appearance
Flow Time (Sec)
SAE J1703 5.7.1 and 5.7.2
Or
571.116 US Dept of
Transportation S6.7

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