PROPERTIES | ROYCO 500 | Viscosity @ 100°C, cSt | 5.13 | Viscosity @ 40°C, cSt | 25.7 | Viscosity @ -40°C, cSt | 9400 | Flash Point, °F (C.O.C.) | 520 | Pour Point, °F | -75 | Neutralization Number | 0.02 | Evaporation, % loss (6 1/2 hrs / 400°F) | 2.5 | Synthetic Rubber Swell, "H", % Swell (72 hrs/158°F) | 12.2 | Synthetic Rubber Swell "F", % Swell (72 hrs/400°F) | 10.5 | Thermal Stability (96 hrs/525 °F) Viscosity @ 100°F, % Change Acid Number Change, mg KOH/g Metal Weight Change, mg/cm2 | 0.5 1.75 0.2 | Corrosion Stability (72 hrs/400°F) Steel, wt. change, mg/cm2 Silver, wt. change, mg/cm2 Aluminum, wt. change, mg/cm2 Magnesium, wt. change, mg/cm2 Copper, wt. change, mg/cm2 | 0.02 0.01 0.02 0.01 0.01 | Oxidation Stability (72 hrs/400°F) Viscosity Change @ 100°F, % Total Acid Number Change | 15.0 0.5 | Contamination, mg/100 ml | 5.0 | Sediment, 1.2 micron filter, mg/l | 1.75 | Total Ash, mg | 0.5 | Foaming, ml initial/ml final Seq I, II, III | nil | |