ADVANCED SYNTHETIC TURBINE LUBRICANT
CORROSION INHIBITED

GENERAL INFORMATION:
ROYCO 899 is an advanced synthetic turbine engine oil designed for use in aircraft and stationary industrial gas turbine engines operating under severe conditions. This product is a 5 centistoke lubricant using state of
the art additive technology and hindered polyol ester base oils resulting in a technologically superior gas turbine lubricant that combines excellent thermal - oxidative and hydrolytic stability, anti-wear protection, and
above all, rust and corrosion inhibition.

TYPICAL PROPERTIES:

PROPERTIES Viscosity, cSt @ 100°C cSt @ 40°C cSt @ -40°C Viscosity Stability, 72 hrs @ -40°C, % Chg Flash Point, °C Pour Point, °C Total Acid No., mg KOH/g Evaporation Loss, %, 6-1/2 hrs @ 400°F Sediment Through 1.2 Micron Filter, mg/l Total Ash, mg/l Shear Stability, % Density, lbs/gal @ 15.5°C Bearing Corrosion Test Foaming Test - Volume after 5 minutes blowing/Volume after 1 minute settling, ml Sequence I Sequence II Sequence III AMS 3217/4 Rubber Swell,72 hrs@400°F,% AMS 3217/l Rubber Swell,72 hrs@ 58°F,% Thermal Stability, 96 hrs @ 274°C (525°F) Viscosity Change @ 100°F, % Total Acid No Change, mg KOH/g Wt of Metal Change, mg/cm2 Corrosion & Oxidation Stability, 72 hrs @ 400°F Viscosity Change @ 40°C, % Acid Number, Change mg KOH/g Sediment, mg/100 ml oil Metal Weight Change, mg/cm2 Steel Silver Aluminum Magnesium Copper

ROYCO 899 5.00 25.8 11,400 +1 263 -56 0.3 4 1 0.1 0.2 8.28 Pass 10/0 5/0 10/0 +15 +14 +0.8 +3.1 - 0.1 +15 +0.2 1 <0.02 <0-02 <0.02 <0.02 <0-02

APPLICATIONS:
ROYCO 899 is especially recommended in critical gas turbine engine applications requiring rust and corrosion protection due to exposure to salt laden air, ambient tropical environments, or other industrial applications
where exposure to chemical corrosives may be unavoidable. ROYCO 899 is also recommended in certain transmission and gearbox applications where a Mil-PRF-23699 lubricant is recommended.

ADVANTAGES:
• Rust and corrosion inhibited
• Low coking
• Low phosphorous for increased catalyst life • Improved thermal-oxidative stability
• Improved hydrolytic stability
• Wide operating temperature range

APPROVALS
ROYCO 899 is fully qualified to the current revision level of US Government MIL-SPEC: MIL-PRF-23699F Grade C/I.