Eni OSO

ENI OSO – High Quality Hydraulic Oil

ENI OSO is a line of high quality hydraulic oils specially developed for use in all types of hydraulic systems and equipment. The oils are formulated from selected paraffinic base stocks treated with anti-rust, anti-oxidant and anti-wear additives. ENI OSO products are available in a wide range of viscosities to satisfy practical requirements.

These oils are designed for energy transmission in hydraulic systems by creating a strong lubricating film capable of withstanding heavy loads between moving parts. They provide excellent oxidation stability, anti-wear performance, good demulsibility and high filterability, ensuring smooth hydraulic operation and long equipment life.

Key Features & Performance Benefits

Excellent anti-wear protection for hydraulic components
Strong oxidation resistance minimizing sludge formation
High viscosity index for stable performance under temperature changes
Low pour point enabling easy cold start
Outstanding anti-rust and anti-corrosion properties
Excellent de-mulsibility preventing stable oil-water emulsions
Good anti-foam and air release characteristics
High filterability suitable for very fine filters

Typical Technical Characteristics

Property	OSO 10	OSO 32	OSO 46	OSO 68	OSO 100
Viscosity at 100°C (mm²/s)	2.72	5.82	7.76	9.41	11.25
Viscosity at 40°C (mm²/s)	10.05	31.92	46.99	67.22	99.24
Viscosity Index	110	126	133	119	99
Flash Point COC (°C)	162	222	236	234	236
Pour Point (°C)	-27	-27	-24	-21	-21
Density at 29.5°C (gm/cc)	0.817	0.834	0.838	0.849	0.878

Applications

ENI OSO fluids are recommended for use in hydrodynamic power transmission machinery, hydraulic controls and hydrostatic systems used in transport, construction, mining, chemical and metallurgical industries, machine tools, and marine & aviation equipment. Lighter grades are suitable for high-speed machinery while heavier grades are used in low-speed equipment with higher hydrostatic pressures.

Specifications

ENI OSO products meet the requirements of:
DIN 51524 Part 2 HLP
AFNOR NF E 48603 HM
CETOP RP 91 H HM
DENISON HF-2
VDMA 24318
BS 4231 HSD
ISO-L-FD (OSO 10)
ISO-L-HM (OSO 32–100)

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