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Mobil DTE™ 21

Mobil DTE™ 21

Hydraulic Oil 

 Gallon Containers

Product Description

Mobil DTE™ 20 Series oils are supreme performance anti-wear hydraulic oils designed to satisfy a wide range of hydraulic equipment requirements. They provide long oil/filter life and optimum equipment protection reducing both maintenance costs and product disposal costs. They were developed in conjunction with the major builders to meet the stringent requirements of severe hydraulic systems using high pressure, high output pumps as well as handling the critical requirements of other hydraulic system components such as close clearance servo-valves and the high accuracy numerically controlled (NC) machine tools. These products meet the most rigorous performance requirements of a wide range of hydraulic system and component manufacturers using various multi-metallurgy designs allowing a single product with outstanding performance characteristics.

The DTE 20 Series oils are formulated with high quality base oils and a super-stabilised additive system that neutralises the formation of corrosive materials. They are designed to work with systems operating under severe conditions where high levels of antiwear and film strength protection are needed, yet they are formulated to work where non-antiwear hydraulic oils are generally recommended.


Features and Benefits

The Mobil DTE 20 Series hydraulic oils provide outstanding oxidation resistance allowing extension of oil and filter change intervals. Their high level of anti-wear properties and excellent film strength characteristics result in exceptional equipment performance that not only results in fewer breakdowns but helps improve production capacity. Their detergency and keep clean properties offer service over a wide range of system cleanlinesses while their controlled demulsibility permits the oils to work well in systems contaminated with small amounts of water yet readily separate large amounts of water.

Features Advantages and Potential Benefits
Anti-wear Helps reduce wear
Protects systems using various metallurgy
Quality Reserve Maintains performance features even under severe service conditions and extended drain intervals
Helps improve system cleanliness
Oxidation Stability Provides long oil and equipment life
Helps extend filter life
Corrosion Protection Prevents internal hydraulic system corrosion
Helps reduce the negative effects of moisture in systems
Provides corrosion protection of multi-metallurgy component designs
Meets a Wide Range of equipment requirements One product can replace several products, minimizing inventory requirements
Helps reduce potential for product misapplication
Air Separation Characteristics Reduces foaming potential and it's negative effects
Water Separation Protects systems where small quantities of moisture are present
Readily separates larger quantities of water
Keep Clean Properties Helps reduce system deposits and sludging helping to reduce maintenance costs
Protects critical components such as servo-valves helping to extend equipment life
Helps improve total system performance

Typical properties

Mobil DTE 20 Series 21
ISO Grade 10
Viscosity, ASTM D 445  
cSt @ 40º C 10.0
cSt @ 100º C 2.74
Viscosity Index, ASTM D 2270 98
Specific Gravity @ 15.6º C/15.6º C, ASTM D 1298 0.845
Copper Strip Corrosion, ASTM D 130, 3 hrs @ 100º C 1B
Rust Characteristics Proc B, ASTM D 665 Pass
Pour Point, ºC, ASTM D 97 -30
Flash Point, ºC, ASTM D 92 174
FZG 4-Square Load Support, DIN 51354, Fail Stage -
Foam Sequence I, II, III, ASTM D 892 , ml 20/0


  • Hydraulic systems critical to deposit build-up such as sophisticated Numerically Controlled (NC) machines, particularly where close clearance servo-valves are used
  • Where small amounts of water are unavoidable
  • Applications where sludges and deposits form with conventional products
  • In systems containing gears and bearings
  • Systems requiring a high degree of load-carrying capability and anti-wear protection
  • Applications where thin oil-film corrosion protection is an asset such as systems where small amounts of water are unavoidable
  • Machines employing a wide range of components using various metallurgy



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.

All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries. 

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