14. “ Rule of Thumb” Every 10°C rise in temperature over 80°C decreases the life of the oil by about half. Lubricant Properties: Oxidation Resistance Oxidation Rate increases with Temperature E.g. Oil Life of Premium R & O: Temperature °C Hours Days 80 10000 416 90 5000 208 100 2500 104 110 1250 52 120 625 26 130 313 13
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19. Use of Additives Detergents Dispersants Anti-Oxidants Rust Inhibitors Anti-Wear E.P. Agents VI Improvers Pour Point Depressants Anti-Foam Engine Oils ATF General R&O Oil AW Hydraulic Industrial Gear Oil HVI Some Automotive Gear Oil Some ADDITIVE Dyes Friction Modifiers Grease
30. Purity (% saturate level) 80 90 100 Viscosity Index 90 100 110 120 130 Group II (Hydroprocessed) Group I (Solvent Refined) Group III (Hydroprocessed) Petro-Canada Group II & VHVI Group III Group IV (PAO) Base Oil Quality
31. Advanced Mineral Base Oils Intensity of Processing Group I (Solvent Refining) Group II (Hydrogenation) Group III (wax conversion) Increased Performance Group II+ (Hydrogenation)
33. Oxidative stability is a key measure of a hydraulic fluid’s ability to retain the protective properties it had as “fresh oil” HYDREX resists oxidative attack better than the leading competitor Better Than Conventional Hydraulic Oil TOTAL WEAR PROTECTION *