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 0-76M, 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.
- Superior
Film Strength
- Prevents
Thermal Runaway
- Rust and
Corrosion protection
- Reduces
Operating Temperatures
- Improved
Efficiency
- Longer Oil, Seal,
& Equipment 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)
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183.9
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Viscosity Index (ASTM D-2270) |
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 |
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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.
Click above graph
for printable PDF version
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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