TYPICAL TECHNICAL PROPERTIES
AMSOIL SEVERE GEAR® Synthetic Heavy Viscosity
Off-Road and Drag Racing SAE 190 & SAE 250 Gear Lubes (SRN, SRT)
    SAE 190
(SRN)		   SAE 250
(SRT)
Viscosity Index (ASTM D-2270)   147   151
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)   37.6   47.4
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)   375.7   502.7
Pour Point °C (°F) (ASTM D-97)   -30 (-22)   -26 (-15)
Four-Ball Wear Test (ASTM D-4172B @ 40 kgf, 75°C, 1200 rpm, 1 hr), Scar, mm   0.41   0.41
Flash Point °C (°F) (ASTM D-92) 150° C Min.   218 (424)   222 (432)
Copper Corrosion (ASTM D-130) 2a Max. @ 121 °C (250°F)/3hr.   1b   1b
Falex Procedure B (ASTM D-3233) (failure load, lbf.)   2500   2500
See our Technical Properties page for descriptions of these tests.
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Revised:

 

01/08