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, 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.
|
TYPICAL TECHNICAL
PROPERTIES
|
|
AMSOIL
SEVERE GEAR™ Synthetic
Extreme Pressure (EP)
SAE 75W-90 Lubricant
|
|
Kinematic
Viscosity @ 100°C, cSt (ASTM
D-445) |
16.6
|
|
Kinematic
Viscosity @ 40°C, cst (ASTM
D-445) |
115.0
|
|
Viscosity
Index (ASTM D-2270) |
156
|
|
Brookfield
Viscosity, cP (150,000 Max)
@-40°C |
87,462
|
|
Flash Point,
°C (°F) (ASTM D-92) 150°C
Min. |
218 (424)
|
|
Pour Point,
°C (°F) (ASTM D-97) |
-51(-60)
|
|
Copper
Corrosion (ASTM D-130) 1b
Max @ 121 °C (250°F) / 3hr |
1b
|
|
Falex
Procedure B (ASTM D-3233)
(failure load, lbf.) |
1500
|
|
Foam
Stability (ASTM D-892)
(20/50/20 maximum) |
0/0/0
|
For product
service life in differentials,
consult your owner's manual or the
Original Equipment Manufacturer
(OEM) to establish the application,
NORMAL or SEVERE.
|
|
NORMAL
|
SEVERE
|
|
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.

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 |
|