| Product Code | Package Size | Unit of Measure |
|---|---|---|
| AWI05-EA | 5 Gallon Pail | Each |
| AWI55-EA | 55 Gallon Drum | Each |
| AWI27-EA | 275 Gallon Tote | Each |
AMSOIL ISO 46 100% Synthetic Anti-Wear Hydraulic Oil delivers reliable protection and cold-weather performance for mobile and stationary hydraulic systems operating under demanding conditions. Built on synthetic base oil technology free of paraffin waxes, it flows quickly at sub-zero temperatures while resisting thermal breakdown in high-heat, high-pressure applications.
Hydraulic systems on log splitters, dump trailers, skid steers, excavators and other heavy equipment face a brutal range of operating conditions. Temperatures can swing from well below zero at morning startup to extreme heat under sustained load. Conventional petroleum hydraulic oils thicken dramatically in cold weather, causing pressure spikes that damage pumps, rupture hoses and blow seals. At the other end of the spectrum, high operating temperatures accelerate oxidation, forming varnish and acid that shorten component life and degrade system performance.
COLD-WEATHER FLOW WITHOUT SUMP HEATERS
AMSOIL Synthetic AW ISO 46 Hydraulic Oil has a pour point of -45°F (ASTM D97), far below what conventional ISO 46 petroleum oils can achieve. Without the waxes found in petroleum base oils, the fluid remains pumpable in bitter cold. Equipment starts easier, pumps receive immediate lubrication, and pressure spikes that crack fittings or blow hoses are reduced. Operators running dump trailers, snowplows or forestry equipment in northern climates can get to work faster without waiting on sump heaters.
ANTI-WEAR PROTECTION FOR HIGH-PRESSURE PUMPS
A zinc-based anti-wear and antioxidant additive package controls wear in high-speed, high-pressure vane and gear pumps. In ASTM D4172 Four-Ball Wear testing (40 kg, 1200 rpm, 75°C, 60 min), the oil produces a wear scar of just 0.45 mm. It also meets the lubrication requirements of axial piston pumps with bronze-on-steel metallurgy, making it suitable across all common pump types. Reduced pump wear translates directly to sustained hydraulic power, lower fuel consumption and fewer unplanned repairs.
THERMAL AND OXIDATIVE STABILITY
Synthetic base oils resist chemical breakdown at elevated temperatures, keeping the hydraulic system free of varnish and sludge deposits. A premium antioxidant additive system fights acid formation and viscosity increase under sustained thermal stress. The flash point of 230°C (446°F) and fire point of 250°C (482°F) reflect the oil's inherent thermal resilience. Systems stay cleaner over longer drain intervals, and fluid life is extended compared to conventional hydraulic oils.
ULTRA-HIGH VISCOSITY INDEX
With a viscosity index of 188 (ASTM D2270), this ISO 46 synthetic hydraulic oil maintains a more consistent viscosity across a wide temperature range than petroleum-based alternatives. At 100°C, kinematic viscosity is 8.5 cSt; at 40°C, it is 48.1 cSt (ASTM D445). That stability means the oil provides a protective lubricating film at high operating temperatures without becoming excessively thick in cold weather. It functions as a true all-season hydraulic fluid.
WATER SEPARATION AND CORROSION RESISTANCE
AMSOIL Synthetic AW Series Hydraulic Oil separates cleanly from water in ASTM D1401 demulsibility testing, achieving 40/40/0 (oil/water/cuff) in just 10 minutes. Rapid water separation prevents emulsions that degrade lubrication and accelerate corrosion. The oil also passes ASTM D665 A and B rust testing in both fresh water and synthetic sea water. Foam is controlled to 0/0 across all three sequences of ASTM D892 testing, preventing cavitation and ensuring smooth, consistent hydraulic operation.
SPECIFICATIONS AND COMPATIBILITY
AMSOIL ISO 46 Synthetic AW Hydraulic Oil is recommended where the following specifications are called for: Denison HF-0, HF-1 and HF-2; Vickers M-2950-S and I-286-S; Cincinnati Milacron P-70; U.S. Steel 127 and 136; Racine variable volume vane pumps; DIN 51524 Part 2; AFNOR E 48-603; Ford M6C-32; GM LH-04-1, LH-06-1 and LH-15-1; Lee Norse 100-1; Jeffrey No. 87; BF Goodrich 0152; and Commercial Hydraulics. It also meets ASTM D-6158 HV requirements.
The oil is compatible with hydraulic system seals, petroleum hydraulic oils and most synthetic hydraulic oils. It is not compatible with phosphate ester, silicone or water-based fluids. For optimum performance, drain the system thoroughly and clean it if warranted before filling.
SERVICE LIFE
AMSOIL Synthetic AW Series Hydraulic Oil is designed for extended drain intervals beyond those typical of conventional hydraulic fluids. Oil analysis is recommended to determine maximum drain intervals based on your specific equipment and operating conditions.
| Property | AWI (ISO 46) | Test Method |
|---|---|---|
| ISO VG | 46 | ASTM D2422 |
| Kinematic Viscosity, 100°C, cSt | 8.5 | ASTM D445 |
| Kinematic Viscosity, 40°C, cSt | 48.1 | ASTM D445 |
| Viscosity Index | 188 | ASTM D2270 |
| Specific Gravity, g/ml | 0.8479 | ASTM D1298 |
| Density, lb/gal | 7.047 | ASTM D1298 |
| Flash Point, °C (°F) | 230 (446) | ASTM D92 |
| Fire Point, °C (°F) | 250 (482) | ASTM D92 |
| Pour Point, °C (°F) | -46 (-51) | ASTM D97 |
| Four-Ball Wear Test, mm (40 kg, 1200 rpm, 75°C, 60 min) | 0.45 | ASTM D4172 |
| Copper Strip Corrosion | 1A | ASTM D130 |
| Foam, Sequence I, II, III (Test End) | 0/0, 0/0, 0/0 | ASTM D892 |
| Dielectric Strength, kV AC | 45.3 | ASTM D877 |
| Demulsibility, Oil/Water/Cuff (min) | 40/40/0 (10) | ASTM D1401 |
| Rust Test, Fresh Water & Synthetic Sea Water | Pass | ASTM D665 A & B |
What equipment is AMSOIL ISO 46 100% Synthetic Anti-Wear Hydraulic Oil designed for?
AMSOIL ISO 46 100% Synthetic Anti-Wear Hydraulic Oil is recommended for high- and low-pressure gear, vane, and piston pumps in both stationary and mobile hydraulic systems. It is suited for a wide range of applications including auto/light truck, heavy-duty on-road and off-road equipment, agriculture, ATV, UTV, snowmobile, motorcycle, marine outboard, and PWC hydraulic systems. It meets the lubrication requirements of axial piston pumps with bronze-on-steel metallurgy and is excellent for general-purpose use in severe-duty operations.
How does AMSOIL ISO 46 synthetic hydraulic oil protect high-pressure hydraulic pumps from wear?
AMSOIL ISO 46 Synthetic Anti-Wear Hydraulic Oil contains a very effective zinc-based anti-wear/antioxidant additive that controls wear in high-speed, high-pressure vane and gear pumps. Its shear-stable synthetic formulation maintains a strong lubricating film at high temperatures and pressures, protecting components against wear. Improved pump efficiency from this protection can increase hydraulic power, reduce fuel consumption, and improve productivity.
What industry specifications does AMSOIL ISO 46 Anti-Wear Hydraulic Oil meet?
AMSOIL ISO 46 Synthetic Anti-Wear Hydraulic Oil is recommended where the following specifications are required: Denison HF-0, HF-1, and HF-2; Vickers M-2950-S and I-286-S; Cincinnati Milacron P-68, P-69, and P-70; U.S. Steel 127; DIN 51524 Parts 2 and 3 (HLP22-HLP46); SEB 181222 (HLP22-HLP68); ASTM D-6158 HV; Ford M6C32; GM LH-04-1, LH-06-1, and LH-15-1; and several others including Lee Norse 100-1, Jeffrey No. 87, and BF Goodrich 0152.
How does AMSOIL ISO 46 synthetic hydraulic oil compare to conventional petroleum hydraulic oils in cold weather?
AMSOIL ISO 46 Synthetic Anti-Wear Hydraulic Oil uses synthetic base oils with very high viscosity indices, low pour points, and no paraffins (wax), making it a true all-season lubricant well-suited for temperature extremes. During cold-temperature operation, equipment starts easier and the need for preheating with sump heaters is reduced. A verified customer in Colorado reported that his dump trailer lifted easier in colder temps and the pump strained less when using this oil compared to traditional hydraulic oils.
Can AMSOIL ISO 46 synthetic hydraulic oil extend drain intervals and reduce maintenance costs?
Yes. AMSOIL ISO 46 Synthetic Anti-Wear Hydraulic Oil is designed for long life, with synthetic base oils that resist thermal and oxidative breakdown, reducing varnish deposits. Its premium additive system inhibits oxidation to help prevent acid formation and viscosity increase. AMSOIL states that this oil can typically reduce maintenance costs by extending drain intervals and reducing labor costs, repairs, and downtime. Oil analysis is recommended to maximize oil drain intervals for your specific application.
Is AMSOIL ISO 46 Anti-Wear Hydraulic Oil compatible with petroleum hydraulic oils and hydraulic system seals?
AMSOIL ISO 46 Synthetic Anti-Wear Hydraulic Oil is compatible with hydraulic system seals, petroleum hydraulic oils, and most synthetic hydraulic oils. However, it is not compatible with phosphate ester, silicone, or water-based fluids. Its base oils also readily separate from water, preventing oil/water emulsions that inhibit lubrication, which allows for longer lubricant life and easier water drainage from the sump. For optimum performance, AMSOIL recommends thoroughly draining the system and cleaning it if warranted prior to installation.
Product Details PDF - AMSOIL ISO 46 100% SYNTHETIC ANTI-WEAR HYDRAULIC OIL
