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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 prevent "thermal runaway" - a phenomenon
caused by a lubricant's inability to control friction and increased heat
under high-stress conditions. By preventing 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.
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 0-76N (75W-90) & 0-76M
(75W-140), plus hypoid gear oil specifications from all foreign and
domestic manufacturers such as GM, Ford and Daimler Chrysler. Can also be
used in rear axles where API Service GL-4 lubricant is recommended.
Product
Code: SVO
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.
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.
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TYPICAL TECHNICAL PROPERTIES
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AMSOIL
SEVERE GEAR™ Synthetic Extreme Pressure (EP) SAE 75W-140
Lubricant
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| Kinematic
Viscosity @ 100°C, cSt (ASTM D-445) |
25.5
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| Kinematic
Viscosity @ 40°C, cst (ASTM D-445) |
183.9
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| Viscosity
Index |
173
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| Brookfield
Viscosity, cP (150,000 Max) @-40°C |
120, 200
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| Flash
Point, °C (°F) (ASTM D-92) 150°C Min. |
210 (410)
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| Pour
Point, °C (°F) (ASTM D-97) |
-48(-54)
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| Copper
Corrosion (ASTM D-130) 1b Max @ 121 °C (250°F) / 3hr |
1b
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| Falex
Procedure B (ASTM D-3233) (failure load, lbf.) |
1500
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| Foam
Stability (ASTM D-892) (20/50/20 maximum) |
0/0/0
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For product service life in differentials, consult your
owner's manual or the Original Equipment Manufacturer (OEM) to establish
the application, NORMAL or SEVERE.
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NORMAL
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SEVERE
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| 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 Truck, Commercial Equipment |
Follow
the OEM drain interval (miles or hours) for synthetic oil up to
250,000 miles. Otherwise, drain at twice the OEM interval for
conventional oil. |
Follow
the OEM drain interval (miles or hours) for synthetic oil.
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.
AMSOIL SEVERE GEAR™ (75W-140) replaces
competitors' 75W-140, 80W-140 and 85W-140 viscosity grades.
AMSOIL SEVERE GEAR™ is compatible with
conventional gear oils, however mixing oils reduces the benefits and
nullifies the extended service life recommendations.
AMSOIL SEVERE GEAR™ is compatible with most
limited slip differentials. If limited slip differential chatter occurs,
add AMSOIL Slip-Lock™ friction modifier additive.
Note: AMSOIL does
not support extended drain intervals where water contamination occurs.
Check and service the gear oil frequently when water contamination is
possible.

AMSOIL has optimized gear lube performance
for specific operating conditions. However, AMSOIL gear lubes are
multi-functional and may be used in many different applications. This
chart conveys the best AMSOIL recommendation based on product design and
operating environment.
First row product recommendations offer
superior performance in the respective applications. Second row product
recommendations offer excellent performance in the respective
applications. The third row is exclusive to SAE 80W-90 viscosity.
AMSOIL Severe Gear™ 75W-90 (SVG) and
75W-140 (SVO) synthetic gear lubes have a performance emphasis on the
extreme pressure and high heat of today’s vehicle differentials.
AMSOIL Long Life 75W-90 (FGR) and 80W-140 (FGO)
synthetic gear lubes have a performance emphasis on 500,000 mile extended
drain intervals associated with larger sumps and lower operating
temperatures of over-the-road truck differentials.
AMSOIL 75W-90 synthetic gear lubes will
outperform conventional 80W-90 gear oils in all applications and may be
used as a replacement.AMSOIL offers 80W-90 (AGL) synthetic gear lube for
those customers requiring this specific viscosity grade.
* Abbreviated Version
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