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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: 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 todays
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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