Product Description
Mobil SHC 800 Series turbine oils are designed specifically to meet the needs
of the most severe industrial gas turbine applications with a nominal 10,000
hour TOST life. They are recommended for the lubrication of land-based gas
turbines, particularly units under 3,000 hp used as standby power units, and
in some types of total energy and combined cycle (gas/steam) systems. This
innovative product family is formulated from wax-free synthesized hydrocarbons
and a unique additive system. This formula provides outstanding low
temperature fluiditiy and exceptional resistance to degradation at high
temperatures well beyond the capabilities of premium quality mineral oils.
Mobil SHC 800 Series lubricants also provide excellent antiwear properties as
well as protection against rust and corrosion plus good air release
performance and resistance to foaming.
These characteristics
provide superior resistance to thermal/oxidative degradation during the heat
soaking period after shutdown and permit rapid oil circulation at low
temperatures during start-up. Degradation resistance is a key attribute in
avoiding harmful deposits that can interfere with lubrication supply to the
bearings or foul critical servo-valves. This is a particular issue when gas
turbines are running in cycling mode and experience multiple thermal stress
cycles. Since low temperature fluidity and high viscosity index are inherent
characteristics of the fluids, they do not change in service as a result of
mechanical shearing or repeated cycling from low to high temperatures. Mobil
SHC 800 Series oils are fully compatible with mineral oils, but admixture will
detract from its superior performance properties
These
progressive products, which have been proven in very severe gas turbine
service over many years, are preferred by users because of their outstanding
stability and equipment protection under the most severe, high temperature
conditions, and because of their easy start-up at low ambient temperature.
This performance results in excellent equipment reliability and minimized
downtime.
Features and Benefits
The Mobil SHC brand of lubricants are recognised and appreciated around the
world for their innovation and outstanding performance. These molecular design
synthetic products, pioneered by our research scientists, symbolise the
continuing commitment to using advanced technology to provide outstanding
products. Mobil brand products have also been the choice for turbine operators
worldwide since they were first commercialized more than one hundred years
ago. During that period our technical experts have stayed in close contact
with OEMs to ensure that our product offerings would provide exceptional
performance in the continually evolving turbine equipment designs. Familarity
with evolving designs and operational conditions is a key input to the
application of the best lubricant technology in the development of products
that will provide the performance demanded by users.
One
general trend over the years has been to higher power output designs, which
can lead to greater thermal stress of the lubricant. This thermal exposure is
exacerbated by cycling operation which is employed by gas turbine operators to
manage the supply/demand balance of electrical power generation, which results
in heat soak-back at each shut-down sequence. Resisting thermal degradation is
thus a key property required of a modern gas turbine oil lubricant.
To combat high thermal exposure of the oil, our product formulation scientists
chose proprietary synthetic base oils for Mobil SHC 800 Series oils because of
their exceptional thermal/oxidative resistance capabilities. Our formulators
chose specific additives that would maximize the benefits of the synthetic
base oils to provide exceptional oil life and deposit control and resistance
to thermal and chemical degradation, as well as the balance of the performance
features. The wax-free nature of the synthetic base oil also provides low
temperature fluidity characteristcs unmatched by mineral products and is a key
benefit for remote, low ambient applications. Among the numerous benefits and
features of Mobil SHC 800 are:
Features
|
Advantages and Potential Benefits
|
|
Outstanding high thermal/oxidative stability and deposit control
|
High level of resistance to heat soak-back after turbine shutdown Less
deposit build-up and improved reliability and lower maintenance costs
Long oil charge life and lower product costs
|
|
Excellent low temperature fluidity
|
Reliable flow and lubrication during cold starts, even at very low temperatures
|
|
Naturally high Viscosity Index
|
Improved equipment protection at high temperatures
|
|
Very good resistance to foaming and good air release
|
Efficient system operation and less un-planned stoppages
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Excellent antiwear performance
|
Excellent equipment protection and reduced equipment replacement costs
|
Applications
Mobil SHC 800 Series turbine oils are designed specifically to meet the needs
of the most severe industrial gas turbine applications and ancillary
equipment. Specific applications include:
- Severe stationary gas turbine applications, particularly units under 3,000hp, for stand-by power generation.
- Industrial gas turbines operating in low ambient and remote areas
- Total energy systems
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Specifications and Approvals

Mobil SHC 800 Series has the following builder approvals:
| 
824
| 
825
|
| Siemens TLV 9013 04 (approved) | X | X |
| Meets Solar ES9-224 Class 1 | X | X |
| Alstom HTGD 90117 (approved) | X | X |
Typical Properties

Mobil SHC 800 Series
| 
824
| 
825
|
| ISO Viscosity Grade | 32 | 46 |
| Viscosity, ASTM D 445 | | |
| cSt @ 40º C | 31.5 | 43.9 |
| cSt @ 100º C | 5.9 | 7.9 |
| Viscosity Index, ASTM D 2270 | 135 | 145 |
| Pour Point, ºC, ASTM D 97 | ‹-54 | -45 |
| Flash Point, ºC, ASTM D 92 | 248 | 248 |
| Specific Gravity @15 ºC kg/l, ASTM D 4052 | 0.83 | 0.83 |
| TOST life, ASTM D 943, hrs to 2NN | 9500 | 9500 |
| Foam Test, ASTM D 892, Seq I, Tendency/Stability, ml/ml | 10/0 | 20/0 |
| Air Release | 1 | 1 |
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Health and Safety
Based on available information, this product is not expected to produce
adverse effects on health when used for the intended application and the
recommendations provided in the Material Safety Data Sheet (MSDS) are
followed. MSDS's are available upon request through your sales contract
office, or via the Internet. This product should not be used for purposes
other than its intended use. If disposing of used product, take care to
protect the environment.
The Mobil logotype, the Pegasus design are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.
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