SEVERE GEAR Synthetic 75W-90 Extreme Pressure Gear
Lube
Specifically engineered for high demand
applications, including trailer towing, heavy hauling, 4X4
off road driving, commercial use, and racing. Superior lube
"film strength" combined with extra additives
protects gears and bearings from scoring and wear. Resists
high heat and possesses excellent cold flow properties.
Performance specifications include: API
GL-5/MT-1, MIL-PRF-2105E, GO-J, SHAES 234 (Eaton PS-037)
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.
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
|
| Kinematic Viscosity @
40°C, cst (ASTM D-445) |
115.0
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| Viscosity Index |
156
|
| 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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