Product Description
AMSOIL SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricants are
premium grade lubricants specifically engineered for maximum performance
in severe duty applications. These state-of-the-art AMSOIL formulations
feature an exclusive blend of high viscosity, shear stable synthetic base
oils and an extra treatment of high-performance additives. AMSOIL SEVERE
GEAR® Synthetic EP Lubricants maintain their viscosity for long-lasting
protection against metal-to-metal contact. The proprietary AMSOIL additives
form an iron-sulfide barrier coating on gear surfaces, providing the ultimate
line of defense against wear, pitting and scoring. AMSOIL SEVERE GEAR® lubricants
help prevent “thermal runaway” — a phenomenon caused
by a lubricant’s inability to control friction and increased heat
under high-stress conditions. By controlling thermal runaway, AMSOIL SEVERE
GEAR® Synthetic EP Lubricants inhibit rapid lubricant degradation and
component damage. Equipment runs better and lasts longer with AMSOIL SEVERE
GEAR® Synthetic EP Lubricants.
Performance
AMSOIL SEVERE GEAR® provides performance beyond that possible with
conventional gear oil. These AMSOIL custom products offer superior
gear and bearing protection, better friction and heat reduction, increased
efficiency and extended service life.
- Superior Film Strength
- Controls Thermal Runaway
- Rust and Corrosion protection
- Reduced Operating Temperatures
- Improved Efficiency
- Longer Oil, Seal, & Equipment
Life
Temperature Extremes
AMSOIL SEVERE GEAR® EP lubricants excel in hot and cold temperature
extremes. By design, they resist breakdown from high heat, preventing
acids and carbon/varnish formation. Their waxfree construction also improves
cold flow properties, improving fuel economy and cold weather shifting.
Applications
AMSOIL SEVERE GEAR® Synthetic EP Lubricants are excellent for severe
applications, such as towing, hauling, steep hill driving, commercial
use, plowing, racing, off-road use, rapid acceleration, frequent stop-and-go
operation and high ambient temperatures.
Higher horsepower, towing and hauling capabilities of modern vehicles
make turbo diesel pick-ups, SUVs, vans and delivery/utility vehicles
especially prone to severe service. Other severe duty vehicles include
light, medium and heavy-duty trucks, busses, heavy equipment, 4X4s, tow
trucks, race cars, tractors, and motorhomes.
For product service life in differentials, consult your owner’s
manual or the Original Equipment Manufacturer (OEM) to establish the
application, NORMAL or SEVERE.
| . |
NORMAL |
SEVERE |
| Cars, SUV, Light & Medium
Duty Trucks |
Drain at 100,000 miles of service or according to the owner’s
manual, whichever is longer |
Drain at 50,000 miles of service or according to the owner’s
manual, whichever is longer |
| Heavy Duty Class 8 Line Haul |
Follow the OEM drain interval (miles or hours)
for synthetic oil up to 250,000 miles or 3 years, whichever comes
first. Otherwise, drain at twice the OEM interval for conventional
oil. |
| Heavy Duty Off-Road Vocational |
Follow the OEM drain interval (miles or hours)
for synthetic oil up to 120,000 miles or 1 year, whichever comes
first. Otherwise, drain at twice the OEM interval for conventional
oil. |
For product service life in non-differential applications, consult owner’s
manual or the OEM for either normal or severe synthetic oil service intervals.
Where service intervals are unavailable, drain at twice the interval
for conventional oil.
Gear oils should be changed more frequently when operating vehicles
or equipment in dusty or dirty conditions unless the gear system is properly
sealed and equipped with membrane type breathers.
Note: AMSOIL does not support extended drain
intervals where water contamination occurs. Check and service the gear
oil frequently when water contamination is possible.
Use in differentials, manual transmissions or other gear applications
where one or more of the following standards are specified: API
GL-5 & MT-1, MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton PS-037)
for 250,000 miles, Mack GO-J, Arvin/Meritor 0-76M (75W-140),
plus hypoid gear oil specifications from all domestic and foreign manufacturers
such as GM, Ford and Daimler Chrysler. Can also be used in axles where
API Service GL-4 lubricant is recommended.
AMSOIL SEVERE GEAR™ (75W-140) replaces
competitors’ 75W-140, 80W-140 and and 85W-140 viscosity grades.
AMSOIL SEVERE GEAR™ is compatible with conventional
and synthetic gear oils. Mixing AMSOIL gear oils with other oils, however,
will shorten the oil life expectancy and reduce the performance benefits.
AMSOIL does not support extended drain intervals where oils have been
mixed.
Aftermarket oil additives, other than those specified by AMSOIL, are not
recommended for use with AMSOIL gear oils.
TYPICAL TECHNICAL PROPERTIES
revised as of 2/06 |
AMSOIL SEVERE GEAR™ Synthetic
Extreme Pressure (EP) SAE 75W-140 Lubricant |
| Kinematic Viscosity @ 100°C, cSt (ASTM D-445) |
25.7 |
| Kinematic Viscosity @ 40°C, cst (ASTM D-445) |
185.6 |
| Viscosity Index (ASTM D-2270) |
173 |
| Brookfield Viscosity, cP (150,000 Max) @-40°C |
124,210 |
| Flash Point, °C
(°F) (ASTM D-92) 150°C Min. |
210 (410) |
| Pour Point, °C
(°F) (ASTM D-97) |
-48 (-54) |
| Copper Corrosion (ASTM D-130) 1b Max @ 121 °C
(250°F) / 3hr |
1b |
| Falex Procedure B (ASTM D-3233) (failure load,
lbf.) |
1500 |
| Foam Stability (ASTM D-892) (20/50/20 maximum) |
0/0/0 |
|
