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Formulated for the severe operating conditions
of today's pick-up trucks, SUVs, heavy equipment and
other hard working vehicles.
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 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: SVG
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-90 Lubricant
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| Kinematic Viscosity @ 100°C, cSt (ASTM D-445) |
16.6
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| Kinematic Viscosity @ 40°C, cst (ASTM D-445) |
115.0
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| Viscosity Index |
156
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| Brookfield Viscosity, cP (150,000 Max) @-40°C |
87,462
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| Flash Point, °C (°F) (ASTM D-92) 150°C Min. |
218 (424)
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| Pour Point, °C (°F) (ASTM D-97) |
-51(-60)
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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-90)
replaces competitors' 75W-90 and 80W-90 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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