Cat 309-6931 HYDO Advanced 10 Hydraulic Oil, SAE 10W | 5 Gallons

Developed, tested and approved by Caterpillar, Cat Hydraulic Oil (HYDO) ensures optimum life and performance when used as recommended in Cat hydraulic and hydrostatic systems.Cat HYDO is formulated with a balanced additive system, including detergents, dispersants, rust inhibitors, anti-wear agents and defoamers. It offers maximum protection against mechanical wear, rusting and corrosive wear in Cat hydraulic and hydrostatic transmission systems.Cat HYDO contains:Anti-wear Agents — Zinc dithiophosphate at 900 ppm(min.) to lubricate while reducing friction, wear and scuffing.Emulsifiers — Disperse small amounts of water throughout the oil so water will not damage hydraulic system components. Defoamers and Air Release Agents — Prevent the formation of bubbles by reducing oil surface tension to quickly release air content to the atmosphere. Anti-oxidants — Prevent the formation of sludge and corrosive acids at high system temperatures and pressures. Detergents/Dispersants — Keep components free of deposits, breaking up contaminants and holding them in suspension.

• Field proven for consistent performance
• Formulated with a high level of zinc additive (900 ppm min.) to minimize pump, motor and valve wear
• Formulated to disperse water properly
• Approved and tested by Cat engineers
• An integral part of Cat machine hydraulic and hydrostatic systems design
• Standard factory-fill oil