A heavyweight gear lube designed to resist viscosity breakdown and protect gears for racing, off-road, monster truck, tractor pull and other high-stress applications.
AMSOIL Severe Gear Synthetic SAE 250 Gear Lube is a super-heavyweight synthetic formula designed to withstand extreme horsepower and violent shock loads while reducing friction for maximum performance. Suitable for ultra-high performance or racing applications.
Features and Benefits of AMSOIL Severe Gear Synthetic SAE 250 Gear Lube
- Provides the ultimate wear protection in severe service applications
- Maintains steady operating temperatures
- Resists viscosity breakdown
- Reduces friction for optimal performance
- Prevents rust during long-term storage
Heavyweight Wear Protection
When it comes to big horsepower, there is no replacement for displacement and when it comes to big wear protection, there is no replacement for viscosity. AMSOIL Severe Gear Synthetic SAE 250 Gear Lube is formulated with a heavyweight, shear stable synthetic base oil that is fortified with extreme pressure additives. This potent formula provides wear protection under severe loads and mega-horsepower. Severe Gear SAE 250 uses its muscular film strength to provide an impenetrable fortress against metal-to-to-metal damage.
Reduces Friction for Cooler Operation and Optimal Power
AMSOIL Severe Gear Synthetic SAE 250 reduces friction which lowers operating temperatures prevents heat build-up during grueling operation. The lower friction also contributes to maximizing efficiency and power delivery.
Prevents Viscosity Shear-Down
A gear lube’s viscosity protection isn’t worthwhile if it breaks down when the going gets tough. Severe Gear SAE 250 is designed to “stay in grade” through the most abusive conditions imaginable so vital components are protected over the long haul.
Rust and Corrosion Protection
Many racing and high performance vehicles are stored for much of the year. During extended downtime, rust and corrosion can take hold. Severe Gear SAE 250 is reinforced with an additive package that keeps corrosion at bay until it’s time to hit the track again.
Suitable Applications for AMSOIL Severe Gear Synthetic SAE 250 Gear Lube
Severe Gear SAE 250 is suitable for any racing or high-performance application requiring a high viscosity gear oil with the API GL-5 specification. Suitable applications include:
- Monster trucks
- Tractor pull
- Drag racing
- Off-road racing
- Rock crawling
Limited Slip Differentials and Severe Gear SAE 250
When using this product in limited slip differentials, add AMSOIL Slip-Lock Limited Slip Additive or equivalent.
Mixing AMSOIL Severe Gear SAE 250 with Other Brands
AMSOIL Severe Gear SAE 250 Synthetic Oil is compatible with all other brands of conventional, semi-synthetic and synthetic gear oils. While you can safely mix AMSOIL Severe Gear with other brands, this will reduce the drain interval and performance capabilities of AMSOIL gear oil.
The use of any aftermarket oil additives (other than limited-slip friction modifiers) is definitely NOT recommended.
Service Life of AMSOIL Severe Gear Synthetic SAE 250 Gear Lube
Change Severe Gear SAE 250 at regular service intervals or as prescribed by the differential builder. Change more often when differential is immersed in water for extended periods.
Specifications |
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Severe Gear® Synthetic Off-Road and Drag Racing Gear Lubricant SAE 250 (SRT) |
SAE 250
|
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Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
|
46.9
|
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Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
|
493.8
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Viscosity Index (ASTM D-2270)
|
152
|
|
Flash Point °C (°F) (ASTM D 92) 150°C Min.
|
224 (435)
|
|
Pour Point °C (°F) (ASTM D 97)
|
-27 (-17)
|
|
Copper Corrosion (ASTM D-130) 2a Max. @ 121 °C (250°F)/3hr.
|
1b
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Falex Procedure B (ASTM D-3233) (failure load, lbf.)
|
3500
|
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Four Ball Wear Test
(ASTM D4172B @ 40 kgf, 75 °C, 1200 rpm, 1 hr), Scar, mm |
0.89
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