Mobil Rarus 425 Lubricant Equivalent - 55 Gallons

Mobil Rarus 425 Replacement Oil

Phi Syn 46 is a semi synthetic ISO 46 air compressor oil designed as a replacement for Mobil Rarus 425. It is engineered for large-scale industrial compressor systems requiring dependable lubrication and predictable service intervals. Supplied in a 55-gallon drum, this formulation is ideal for manufacturing plants, maintenance programs, and fleet operations managing multiple rotary screw or reciprocating compressors.

Blended with high-quality hydrocarbon base oils and performance additives, Phi Syn 46 provides up to 4,000 hours of service life at temperatures up to 200°F. Its ISO 46 viscosity delivers stable film strength, reliable anti-wear protection, and consistent thermal performance in continuous-duty industrial environments.

Designed for operations where routine maintenance cycles are standard practice, this semi synthetic compressor lubricant performs well in dusty, dirty, or high-contaminant environments. The 55-gallon drum format supports centralized lubrication programs, reduced per-gallon cost, and simplified inventory management.

Key Benefits

• Up to 4,000-hour service life under normal operating conditions
• ISO 46 viscosity for balanced lubrication and heat stability
• Semi synthetic hydrocarbon formulation for dependable protection
• Strong anti-wear performance for bearings, rotors, and compression elements
• Excellent water separation and foam control
• Designed for rotary screw and reciprocating air compressors
• 55-gallon drum ideal for plant-wide or fleet maintenance programs
• Helps reduce downtime and streamline lubrication planning

Applications

Recommended for industrial facilities operating rotary screw and reciprocating compressors requiring ISO 46 semi synthetic air compressor oil, including production plants, automotive facilities, heavy equipment fleets, and high-demand compressed air systems.

OEM Cross-Reference (For Identification & Compatibility Reference Only)

Suitable for compressor systems operating with ISO 46 semi-synthetic lubricants similar to:

• Mobil Rarus 425

AirCompressors.com is an independent distributor and supplier and is not affiliated with, authorized by, or endorsed by any original equipment manufacturer referenced above. OEM names and trademarks are used strictly for identification and compatibility purposes.

Why Choose AirCompressor.com House Brand Lubricants?

• Industrial-grade compressor oil engineered for operational reliability
• Transparent ISO viscosity alignment and technical specifications
• Cost-effective alternative to OEM semi-synthetic compressor oils
• Bulk drum availability for large-scale maintenance programs

Phi Syn 46 in the 55-gallon drum format delivers dependable semi synthetic compressor lubrication designed for industrial uptime and efficient plant-wide maintenance execution.

If you’re unsure whether this is the right replacement oil, you can quickly verify compatibility using our compressor lubricant cross reference tool. For additional guidance, explore our cross reference guide or review the oil equivalent chart to compare compatible options.