Greases
Product Data
castrol.com/GPS
800 255 4417
May 2025
GPS
Castrol
®
Pyroplex
®
Red
Test Method Results
1 2
Base Oil Viscosity ASTM D445
SSU @100°F. 900 900
SSU @210°F. 101 101
cSt @40°C 194 194
cSt @100°C 21 21
Viscosity Index 125 125
Rust Prevention ASTM D1743 Pass Pass
Water Washout, ASTM D1264 5.1 3.2
% Loss @80°C.
Oil Separation % ASTM D1742 5.3 2.8
Wheel Bearing Life - hrs ASTM D3527 85 100
Wheel Bearing ASTM D4290 3 1.5
Leakage, g
Oxidation Stability ASTM D942 2 1
@ 100 hr, psi loss
Copper Corrosion ASTM D4048 1b 1b
F19
