PRODUCT DESCRIPTION
AMSOIL Severe Gear Synthetic SAE 190 and SAE 250 Gear Lubricants
are premium grade, extreme pressure gear lubes engineered specifically for the demands of severe
racing conditions. They are formulated with shear stable, heavy synthetic base oils for “high
film strength” and extra heavy treatments of additives. Their synthetic formulations provide
improved flow over conventional oils, reducing viscous drag and power loss. Severe Gear SAE 190 and SAE 250 Gear Lubes
provide a barrier cushion between metal surfaces that absorbs impact. AMSOIL proprietary extreme
pressure additives form an iron-sulfide barrier coating on gear surfaces for the ultimate line
of defense against wear, pitting and scoring.
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 |
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Severe Gear® Synthetic Off-Road and Drag Racing Gear Lubricant SAE 250
(SRT)
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Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
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Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
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Viscosity Index (ASTM D-2270)
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Flash Point °C (°F) (ASTM D 92) 150°C Min.
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Pour Point °C (°F) (ASTM D 97)
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Copper Corrosion (ASTM D-130) 2a Max. @ 121 °C (250°F)/3hr.
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Falex Procedure B (ASTM D-3233) (failure load, lbf.)
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Four Ball Wear Test
(ASTM D4172B @ 40 kgf, 75 °C, 1200 rpm, 1 hr), Scar, mm
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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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