PERFORMANCE

AMSOIL Severe Gear Synthetic SAE 190 and SAE 250 Gear Lubricants are specifically engineered for high horsepower, high torque conditions where centrifugal gear lube sling-off is encountered. These tenacious formulations cling to gears and bearings for the best possible protection during shock loading, high G-forces and where pinion gears are installed at steep angles. Custom Severe Gear Synthetic Gear Lubricants provide exceptional reliability and extended gear life.

• Protects gears from shock loading and tire shake
• Resists sling-off from G-forces and high speeds
• Clings to gears - high pinion style and at steep angles
• Promotes cooler operating temperatures
• Protects against rust and corrosion
• Extends gear and bearing life

APPLICATIONS

AMSOIL Severe Gear Synthetic SAE 190 and SAE 250 Gear Lubricants are excellent for severe differential applications, including off-road truck racing, rock racing, rock crawling, tractor pulling, funny car racing and dragster racing. Other severe duty applications include heavy duty trucks and equipment where increased lubricant film is necessary. These oils are recommended for use in hypoid gear differentials and other applications requiring a high viscosity, API GL-5 gear lube. Where limited slip performance is required, use AMSOIL Slip-Lock® limited slip additive.

TYPICAL TECHNICAL PROPERTIES SAE 190 (SRN)
Severe Gear® Synthetic Off-Road and Drag Racing Gear Lubricant SAE 190 (SRN)
SAE 190
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
37.6
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
375.7
Viscosity Index (ASTM D-2270)
147
Flash Point °C (°F) (ASTM D 92) 150°C Min.
218 (424)
Pour Point °C (°F) (ASTM D 97)
-30 (-22)
Copper Corrosion (ASTM D-130) 2a Max. @ 121 °C (250°F)/3hr.
1b
Falex Procedure B (ASTM D-3233) (failure load, lbf.)
2500
Four Ball Wear Test
(ASTM D4172B @ 40 kgf, 75 °C, 1200 rpm, 1 hr), Scar, mm
0.41

TYPICAL TECHNICAL PROPERTIES SAE 250 (SRT)
Severe Gear® Synthetic Off-Road and Drag Racing Gear Lubricant SAE 250 (SRT)
SAE 250
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
47.4
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
502.7
Viscosity Index (ASTM D-2270)
151
Flash Point °C (°F) (ASTM D 92) 150°C Min.
222 (432)
Pour Point °C (°F) (ASTM D 97)
-26 (-15)
Copper Corrosion (ASTM D-130) 2a Max. @ 121 °C (250°F)/3hr.
1b
Falex Procedure B (ASTM D-3233) (failure load, lbf.)
2500
Four Ball Wear Test
(ASTM D4172B @ 40 kgf, 75 °C, 1200 rpm, 1 hr), Scar, mm
0.41

Service Life

AMSOIL Severe Gear Synthetic SAE 190 and SAE 250 Gear Lubricants are intended for severe racing and other applications where extended drain intervals are not beneficial. AMSOIL recommends changing the lubricant as conditions dictate. Where extended drain intervals are desired, AMSOIL recommends monitoring by oil analysis.

Mixing AMSOIL

AMSOIL Severe Gear Synthetic SAE 190 and SAE 250 Gear Lubricants are compatible with conventional and synthetic automotive gear oils. Mixing AMSOIL gear oils with other oils, however, will shorten the oil life expectancy and reduce the performance benefits. Aftermarket oil additives, other than those specified by AMSOIL, are not recommended for use with AMSOIL gear oils.

Health & Safety

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). An MSDS is available upon request at 715-392-7101 or via the internet at www.AMSOIL.com/msds. Keep out of reach of children. Don’t pollute. Return used oil to collection centers.

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Dan Watson, AMSOIL Dealer

Dan Watson
Independent AMSOIL Dealer