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 190
(SRN)
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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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