| Product Code | Package Size | Unit of Measure |
|---|---|---|
| HCG68TP-EA | 2.5 Gallon Jug | Each |
| HCG68TP-CA | Jug | Case of 2 |
| HCG6855-EA | 55 Gallon Drum | Each |
AMSOIL ISO 68 Commercial-Grade Hydraulic Oil delivers reliable wear protection and system cleanliness for industrial and mobile hydraulic equipment that runs hard and consumes fluid in volume. It strikes a practical balance between cost and performance for operations where hydraulic oil is a significant line item.
Hydraulic systems in construction equipment, manufacturing plants, log splitters, and mobile machinery face constant stress from high pressures, temperature swings, and contamination. Over time, fluid breakdown leads to sludge deposits in valves and solenoids, foam-related cavitation in pumps, and accelerated wear on critical components. The wrong oil, or a degraded one, turns a productive machine into a maintenance headache.
STRONG WEAR PROTECTION FOR PUMPS AND MOTORS
Hydraulic pumps and motors are expensive to replace and time-consuming to rebuild. AMSOIL ISO 68 Commercial-Grade Hydraulic Oil is formulated with anti-wear additives that protect gear, vane, and piston pump internals under both high- and low-pressure conditions. In ASTM D4172 Four-Ball Wear Testing at 75°C, 1200 rpm, and 40 kg load, the ISO 68 grade produced a wear scar of just 0.50 mm. It also achieves FZG A/8.3/90 Load Stage 12, which reflects strong gear-tooth protection under heavy loading. These results translate directly to longer pump life and less unscheduled downtime.
FIGHTS SLUDGE AND MAINTAINS SYSTEM CLEANLINESS
Sludge and varnish deposits restrict flow through valves, clog solenoids, and degrade the precision response that hydraulic systems depend on. This oil resists oxidation to stay clean in service, helping maintain the operability of tight-tolerance components. Good filterability means the fluid works with your filtration system rather than against it, supporting longer fluid life and cleaner overall system operation.
RESISTS FOAM TO PREVENT CAVITATION DAMAGE
Foam in a hydraulic system causes spongy, inconsistent operation and can starve pumps of lubrication, leading to cavitation damage. AMSOIL Commercial-Grade Hydraulic Oil posts 0/0 ml results across all three sequences of the ASTM D892 Foam Characteristics test. That is zero foam tendency and zero foam stability in every test condition. The result is firm, responsive hydraulic action and reduced risk of pump damage from aerated fluid.
CORROSION RESISTANCE FOR LONG COMPONENT LIFE
Moisture inevitably enters hydraulic systems through condensation and seal leakage, especially in outdoor mobile equipment. This oil scores a 1A rating in the ASTM D130 Copper Strip Corrosion Test at 100°C, confirming minimal corrosive effect on system metallurgy including bronze components. It also demonstrates strong demulsibility, separating from water at a rate of 40-40-0 in 20 minutes per ASTM D1401, which helps water settle out for removal rather than circulating through the system.
SPECIFICATIONS AND COMPATIBILITY
AMSOIL ISO 68 Commercial-Grade Hydraulic Oil is suitable for use in high- and low-pressure gear, vane, and piston hydraulic systems, including those with bronze metallurgy. It meets or is suitable for the following specifications:
This makes it a direct fit for a wide range of industrial presses, injection molding machines, mobile construction and forestry equipment, agricultural implements, and shop equipment like hydraulic log splitters and lifts that call for an ISO 68 anti-wear hydraulic fluid.
SERVICE LIFE
Follow the equipment manufacturer's recommended drain interval or oil analysis program. Monitoring fluid condition through regular oil analysis is the most reliable way to maximize service life and catch contamination or degradation before it causes component damage.
| Property | ISO 68 | Test Method |
|---|---|---|
| ISO Viscosity Grade | 68 | ASTM D2422 |
| Kinematic Viscosity @ 100°C, cSt | 9.0 | ASTM D445 |
| Kinematic Viscosity @ 40°C, cSt | 68.3 | ASTM D445 |
| Viscosity Index | 106 | ASTM D2270 |
| Flash Point, °C (°F) (COC) | 264 (507) | ASTM D92 |
| Pour Point, °C (°F) | -33 (-27) | ASTM D97 |
| Four-Ball Wear Test, mm (75°C, 1200 rpm, 40 kg, 1 hr) | 0.50 | ASTM D4172 |
| Copper Strip Corrosion, 100°C, 3 hr | 1A | ASTM D130 |
| Foam Characteristics, Seq. I, ml | 0/0 | ASTM D892 |
| Foam Characteristics, Seq. II, ml | 0/0 | ASTM D892 |
| Foam Characteristics, Seq. III, ml | 0/0 | ASTM D892 |
| Demulsibility, Min. | 40-40-0 (20) | ASTM D1401 |
| FZG A/8.3/90, Load Stage Fail | 12 | — |
What equipment is AMSOIL ISO 68 Commercial-Grade Hydraulic Oil designed for?
AMSOIL ISO 68 Commercial-Grade Hydraulic Oil (HCG68TP-EA) is formulated to protect both industrial and mobile hydraulic applications. It is suited for a wide range of equipment categories including heavy-duty on-road and off-road vehicles, agriculture equipment, ATVs, UTVs, snowmobiles, marine outboard engines, PWCs, motorcycles, and auto/light truck hydraulic systems. It is designed to service pumps, motors, valves, solenoids, and other hydraulic components that require an ISO 68 viscosity grade fluid.
How does AMSOIL ISO 68 Commercial-Grade Hydraulic Oil protect hydraulic pumps and motors from wear?
AMSOIL ISO 68 Commercial-Grade Hydraulic Oil provides strong wear protection for pumps, motors, valves, and other hydraulic components, helping them operate properly and last as designed. By resisting wear on critical surfaces, it helps reduce maintenance costs and downtime. The formulation also fights sludge buildup, which maintains the cleanliness and operability of pumps, valves, and solenoids over time.
What ISO viscosity grade and key specifications does AMSOIL Commercial-Grade Hydraulic Oil HCG68TP meet?
AMSOIL Commercial-Grade Hydraulic Oil carries an ISO 68 viscosity grade designation, which indicates its kinematic viscosity falls within the ISO VG 68 range suitable for medium- to heavy-duty hydraulic systems. The formulation is engineered with oxidation resistance, corrosion inhibition, anti-foam properties, and good filterability. For full technical specifications and detailed test data, AMSOIL directs users to the product's data bulletin available on the product page.
How does AMSOIL ISO 68 Commercial-Grade Hydraulic Oil compare to conventional hydraulic fluids?
AMSOIL ISO 68 Commercial-Grade Hydraulic Oil is formulated to resist oxidation, fight corrosion, and inhibit foam — all of which help maintain component cleanliness and promote efficient hydraulic system operation. It also provides good filterability for maximum fluid performance and life. These combined properties help reduce maintenance costs and downtime compared to hydraulic fluids that may break down faster, allow sludge accumulation, or foam under operating conditions.
How does AMSOIL ISO 68 hydraulic oil help maintain cleanliness in hydraulic systems?
AMSOIL ISO 68 Commercial-Grade Hydraulic Oil actively fights sludge formation to help maintain the cleanliness and operability of pumps, valves, solenoids, and other hydraulic components. It resists oxidation, which is a primary cause of sludge and varnish in hydraulic systems. Additionally, the formulation provides good filterability, allowing filters to work effectively and extending overall fluid performance and service life.
Is AMSOIL ISO 68 Commercial-Grade Hydraulic Oil safe for hydraulic system seals and components?
AMSOIL ISO 68 Commercial-Grade Hydraulic Oil is formulated for use in industrial and mobile hydraulic applications and is designed to be compatible with the pumps, motors, valves, solenoids, and other components found in these systems. It resists corrosion to promote long component life and inhibits foam to guard against cavitation that can damage pumps. For specific seal compatibility details and additional technical specifications, AMSOIL recommends consulting the product's data bulletin and SDS available on the product page.
Product Details PDF - AMSOIL ISO 68 COMMERCIAL-GRADE HYDRAULIC OIL
