Comparison Torque RT700™, Castrol SRF, Endless RF-650, Motul RBF* & StopTech Brake Fluids
|
DOT 4 Min Standard |
Torque RT700™ |
Castrol SRF |
Endless RF-650 |
Motul RBF600* |
Motul RBF660* |
StopTech STR-600 |
StopTech STR-660 |
Dry Boiling Point (°C) |
230 °C | 362 °C | 310 °C | 323 °C | 312 °C | 325 °C | 312 °C | 328 °C |
Dry Boiling Point (°C) |
N/A | 363 °C | 324 °C | 324 °C | 299 °C |
309 °C |
N/A | N/A |
Wet Boiling Point (°C) |
155 °C | 226 °C | 269 °C | 218 °C | 205 °C | 205 °C | 206 °C | 206 °C |
Wet Boiling Point (°C) |
N/A | 226 °C | 280 °C | 211 °C | 206 °C |
204 °C | Minimum Wet Boiling Point 195 °C | Minimum Wet Boiling Point 195 °C |
High Temperature Stability |
±5.4 + 1 ° that original BP exceeds 437 °F | -1 °F | -3.5 °F | -3.5 °F | -7.2 °F |
-3.5 °F | N/A | N/A |
Chemical Stability |
±5.4 + 1 ° that original BP exceeds 437 °F | -1.23 °F | -3.6 °F | -3 °F | -2 °F | -3 °F | N/A | N/A |
Vapor Pressure |
N/A | <0.01 mmHg @ 68 °F | N/A | N/A | N/A | N/A | N/A | N/A |
Density (Specific Gravity) |
N/A | 1.095 | N/A | N/A | N/A | N/A | N/A | N/A |
pH |
7.0 - 11.5 | 7.3 | 9.1 | 5.7 |
7.1 | 6.8 |
||
Viscosity -40 °F (cSt) |
1800 max | 1501 | 1202 | 2543 |
1660 | 1434 | N/A | N/A |
Viscosity 212 °F (cSt) |
1.5 min | 2.1 | 3.5 | 3.5 | 2.7 | 2.7 | N/A | N/A |
Compressibility |
No standard | 5.19E-05 @ 212 °F @ 5800 psi (400 bar) |
6.487E-05 @ 212 °F @ 5800 psi (400 bar) |
5.868E-05 @ 212 °F @ 5800 psi (400 bar) |
N/A |
N/A |
N/A | N/A |
(Numerically lower numbers denote lessor compressibility) |
3.969E-05 @ 122 °F @ 5800 psi (400 bar) |
5.230E-05 @ 122 °F @ 5800 psi (400 bar) |
4.884E-05 @ 122 °F @ 5800 psi (400 bar) |
N/A |
N/A |
N/A | N/A | |
|
3.405E-05 @ 68 °F @ 5800 psi (400 bar) |
4.621E-05 @ 68 °F @ 5800 psi (400 bar) |
4.846E-05 @ 68 °F @ 5800 psi (400 bar) |
N/A |
N/A |
N/A | N/A | |
Reserve Alkalinity |
No standard | 84 | 10 | 5 | 33 | 36 | N/A | N/A |
% H2O Content at Testing |
No standard | 0.01 | 0.01 | 0.15 | 0.19 | 0.22 | N/A | N/A |
Red indicates where the brake fluid did not meet the SAE J1704 and/or FMVSS 116 requirements.
Yellow indicates where brake fluid did not meet the manufacturer’s performance claims
*While we have only listed Motul RBF600 and RBF660 the performance characterisitics are applicable to a large number of other brands of fluids as they all come from one manufacturer.
Source: http://www.torquebrakefluid.com/compare_torque_rt700_to_other_brake_fluids.html