Royco® 581

Royco® 581 is a concentrated preservative oil compound for aircraft components and engines. It meets MIL-STD-2073-1C.

Royco® 581 is a concentrated version of a highly refined base oil with ashless, anticorrosion additive technology. Royco® 581 is designed to act as a preventative and protect aircraft engines from rust, corrosion, and the effects of humidity or acidic components from engine oil oxidation.

Royco® 581 is also suitable for use as a preservative for industrial gasoline- or diesel-fueled engines, industrial gearboxes, and machine tools. Royco® 581 can also be used as a flyaway oil for short-term use.

Product type: Concentrated engine oil
Kinematic viscosity, cSt (@ 100°F): 279
Kinematic viscosity, cSt (@ 210°F): 21.54
Pour point, (°F): 0
Flash point, (°F): 544
Primary Chemistry: Mineral Oil

• Easy to dilute for immediate use

• Uncompromising protection during short- or long-term storage

• Excellent rust and corrosion protection

• Reduces and prevents premature wear and damage

Royco® 581 is a concentrated engine oil that can be used across a range of engine types. 

Specification: MIL-C-6529 Type 1

MIL-SPEC Scope: This specification covers an oil-type corrosion preventative, which is a satisfactory lubricant for aircraft engines when applied as specified.