Product Description
The Mobil DTE Oil Double Letter Series of lubricants are high performance
heavy duty circulating oils primarily intended for continuous reuse in
circulation lubrication systems for gears and bearings. They are formulated
from high quality base stocks and a proprietary additive system to provide
superior protection against rust, excellent resistance to oxidation and
thermal degradation, and a high level of protection against wear, plus
excellent resistance to high temperature corrosion of soft metals. They
possess good demulsibility that permits water and other contaminants to
separate readily from the oil in the system reservoir. The Mobil DTE Oil
Double Letter Series are available in four ISO viscosity grades from 150 to
460.
The Mobil DTE Double Letter Series family of products provides a versatile
lubricant source for a wide range of industrial equipment. They provide the
users with very reliable and efficient operation in industrial circulating
system applications, as well as other lubricant application methods, including
hydraulic systems. They are particularly resistant to the effects of prolonged
high temperature exposure and perform very well in circulating systems with
short oil residence times. Mobil DTE Double Letter Series oils have very good
water seperability properties, which allows water to separate readily in the
system reservoir. Their high level of anti-wear properties results in
exceptional equipment performance that not only results in fewer breakdowns
but helps improve production capacity.
This combination of benefits has Mobil DTE Oil Double Letter Series the
product of choice for many users around the world, for the last several
decades.
Features and Benefits
The Mobil DTE family of products is well known and highly regarded world-wide
based on their outstanding performance and the RandD expertise and the global
technical support which stand behind the brand. The highly versatile
performance of one series of oils in this family, Mobil DTE Oil Double Letter
Series oils, has made them the choice of many users around the world for many
decades.
Mobil DTE Named oils enjoy an excellent reputation in the lubrication of the
circulation systems of industrial gearboxes and paper machines, plus a wide
variety of ancillary equipment, including hydraulic systems. As designs change
and increase in severity, it is the challenge of our scientists to understand
the effect of these changes on the lubricant and to formulate these products
for the broad versatility they are recognized for.
For the Mobil DTE Oil Double Letter Series of lubricants this process has
resulted in the use of a proprietary high quality base stocks for outstanding
oxidation stability, plus a unique additive combination to ensure the
excellent, wide-ranging performance of these oils. A review of the features,
advantages and potential benefits of the product are shown below:
Features
|
Advantages and Potential Benefits
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Excellent thermal/oxidative and chemical degradation resistance
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Long lubricant charge life giving extended drain periods and reduced product
replacement costs; reduced filter deposits and longer filter life
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Outstanding anti-wear performance
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Reduced pump wear leading to longer pump life, protection of critical bearings
and gearing
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Protection against rust and corrosion in both the liquid and vapour phase
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Enhanced system cleanliness for reduced maintenance and un-planned stoppages
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Good demulsibility and avoids emulsion formation
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Improved operating efficiency and lower operating costs
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Multiple application capability
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Reduced plant inventory savings
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Applications
These oils are intended primarily for the lubrication of plain bearings,
roller bearings, parallel shaft and bevel gearing. They are suitable as
multipurpose lubricants in systems not subject to shock loading and which do
not require extreme pressure performance. They are used in applications using
splash, bath and ring oil arrangements and all other application methods
involving pumps, valves and auxiliary equipment. They are recommended for use
in hydraulic systems where higher viscosity oils are specified.
- Moderate duty spur, bevel, helical and herringbone gear units
- Circulating systems
- The oils perform well at the elevated temperatures normally found in the dryer sections of paper machines
- Mobil DTE Oil Extra Heavy and BB can also be used in hydraulic systems employing gear, vane, radial and axial piston pumps where anti-wear hydraulic fluids are required and clearances are relatively large
- Certain compressors and vacuum pumps handling air and inert gases provided the discharge temperatures do not exceed 150°C
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Specifications and Approvals

MOBIL DTE Oil Double Letter Series meets the following industry and builder
specifications
| 
Mobil DTE Oil Extra Heavy
| 
Mobil DTE Oil BB
| 
Mobil DTE Oil AA
| 
Mobil DTE Oil HH
|
| Meets FAG: PM Oils for Dry Section (OHT-F-3) | | X | | |
| Meets SKF: PM Oils for Dry Section | | X | | |
Typical Properties

MOBIL DTE Oil Double Letter Series
| 
Mobil DTE Oil Extra Heavy
| 
Mobil DTE Oil BB
| 
Mobil DTE Oil AA
| 
Mobil DTE Oil HH
|
| ISO Viscosity Grade | 150 | 220 | 320 | 460 |
| Viscosity, ASTM D 445 | | | | |
| cSt @ 40ºC | 146 | 218 | 325 | 436 |
| cSt @ 100ºC | 14.4 | 18.8 | 24.4 | 29.4 |
| Viscosity Index, ASTM D 2270 | 96 | 96 | 96 | 95 |
| Pour Point, ºC, ASTM D 97 | -21 | -18 | -12 | -15 |
| Flash Point, ºC, ASTM D 92 | 272 | 284 | 286 | 288 |
| Density @15ºC, ASTM D 1298, kg/l | 0.89 | 0.89 | 0.90 | 0.90 |
| Demulsibility for non-EP oils, ASTM D2711, ml free water | 38 | 36 | 39 | 35 |
| Water separability, ASTM D 1401, Min. to 40/37/3 ml emulsion @ 82ºC | 20 | 20 | 20 | 20 |
| Rust Prevention, ASTM D 665 | | | | |
| Distilled Water | Pass | Pass | Pass | Pass |
| Sea Water | Pass | Pass | Pass | Pass |
| Copper Corrosion, ASTM D 130 hours @ 100ºC | 1A | 1A | 1A | 1A |
| FZG Gear Test, DIN 51354, Failure Stage | 12 | 12 | 12 | 12 |
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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.
Toxicity class: free BAG T No.:
611500
The Mobil logotype, the Pegasus design are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.
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