FUEL AND LUBRICANT SPECIFICATIONS SECTION 8
DD-29/31HF/38HF Vibratory Asphalt Compactors 8-7
HYDRAULIC OIL REQUIREMENTS AND SPECIFICATIONS
The quality of the hydraulic oil is important to the satisfactory performance of any hydraulic
system. The oil serves as the power transmission medium, system coolant, and lubricant.
Selection of the proper oil is essential to ensure proper system performance and life. For the
specifications and requirements that hydraulic oil used in this machine should meet,
refer to Table 8-3.
Table 8-4:Hydraulic Oil Specifications
The following are oils THAT meet above specifications.
SPECIFICATION REQUIREMENT
Viscosity
60 SUS minimum at operating temperature
7500 SUS minimum at starting temperature
150 to 225 SUS at 100° F (generally)
44 to 48 SUS at 210° F (generally)
Viscosity Index 90 minimum
Aniline Point -175 minimum
API Gravity
28 minimum
Parafinic oils: 28 or more
Mixed base: 24 to 28
Naphthalic or asphaltic base: 24 or less
Recommended Additives
Rust and oxidation inhibitors
Foam Depressant
Desirable Characteristics
Stability of physical and chemical characteristics
High demulsibility (low emulsibility) for separation of water,
air, and contaminants
Resistance to the formation of gums, sludges, acids, tars,
and varnishes
High lubricity and film strength
Temperatures above 10° F (-12° C): International Harvester: Hy-Tran
Mobil Oil Company: Mobil DTE 15M
Sun Oil Com.: Sun Oil 2105
Temperatures below 10° F (-12° C): Auto Transmission Fluid: Type F
Mobil Oil Company: Mobil DTE 13
Shell Oil Company: Tellus T-27
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