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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 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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