| Product Code | Package Size | Unit of Measure |
|---|---|---|
| HVI05-EA | 5 Gallon Pail | Each |
| HVI55-EA | 55 Gallon Drum | Each |
| HVI27-EA | 275 Gallon Tote | Each |
AMSOIL ISO 46 100% Synthetic Multi-Viscosity Hydraulic Oil delivers all-season protection, anti-varnish cleanliness and proven wear resistance for hydraulic systems operating in demanding environments. It is a direct, premium upgrade over conventional ISO 46 hydraulic fluids in everything from excavators and skid steers to log splitters, aerial lifts and CNC machines.
Hydraulic systems are precision machines with tight tolerances, and the fluid running through them is more than just a lubricant. It is the power-transfer medium. When that fluid breaks down from heat, accumulates varnish or thickens up in cold weather, the entire system suffers. Valves stick. Response times lag. Pumps wear prematurely. Conventional mono-grade hydraulic oils force operators to choose between hot-weather protection and cold-weather fluidity, and they often lack the oxidation resistance needed for extended service in high-temperature environments.
CONTROLS VARNISH AND KEEPS SYSTEMS CLEAN
Varnish is one of the most damaging contaminants in a hydraulic system. It coats valve spools, servo mechanisms and filter media, leading to sluggish response, stuck valves and unplanned downtime. AMSOIL Synthetic Multi-Viscosity Hydraulic Oil is fortified with anti-varnish additives that chemically react with the precursors of varnish formation, stopping the process before deposits accumulate. In aluminum beaker oxidation testing, this synthetic formulation resisted elevated heat and oxidation more effectively than a leading conventional ISO 46 hydraulic fluid. Cleaner systems mean longer component life, longer fluid life and fewer filter changes.
DELIVERS YEAR-ROUND PROTECTION IN EXTREME TEMPERATURES
A multi-viscosity synthetic hydraulic oil eliminates the seasonal fluid-swap problem that plagues operations running conventional mono-grade fluids. AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil has a pour point of -44°C (-47°F), so it flows readily at startup in cold conditions, reducing pressure spikes and erratic cylinder movement. It does not contain the waxes inherent to conventional base oils, which means bearings and other components receive almost immediate lubrication at startup rather than waiting for the fluid to warm up and thin out. On the hot end, its naturally heat-resistant synthetic base oils maintain protective viscosity with a viscosity index of 161, compared to typical values of 90 to 110 for conventional ISO 46 fluids. The flash point of 246°C (475°F) and fire point of 266°C (511°F) provide a generous safety margin in high-temperature industrial environments.
FIGHTS COMPONENT WEAR WITH PROVEN PUMP-TEST RESULTS
This formulation uses a shear-stable base combined with zinc-type anti-wear additives to protect pumps, motors, valves and cylinders under heavy loads and high pressures. It meets the stringent viscosity-retention and wear-protection requirements of Parker Hannifin (Denison) HF-0. In 608 hours of strenuous testing in a Parker Hannifin (Denison) T6H20C Hybrid pump, the piston shoes showed only moderate polishing and trace random scratches. The vane pump cam ring exhibited only light polishing and trace scratching. Four-Ball Wear testing per ASTM D4172 (40 kg, 1200 rpm, 75°C, 60 min.) produced a wear scar of just 0.41 mm. Copper Strip Corrosion testing (ASTM D130) returned a 1A rating, confirming full compatibility with the yellow metals found in bronze bushings, brass fittings and copper alloy components common in hydraulic systems.
RESISTS FOAM AND SEPARATES WATER
Foam in hydraulic fluid causes sponginess, cavitation and accelerated oxidation. AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil tested at 0/0 foam tendency and stability in Sequences I and III, and 10/0 in Sequence II per ASTM D892. Water contamination is addressed by strong demulsibility characteristics, with ASTM D1401 results of 40-40-0 in 20 minutes. Rapid water separation helps prevent rust, microbial growth and additive depletion in systems exposed to moisture ingress.
MAXIMIZES ENERGY EFFICIENCY
Lower internal fluid friction translates directly to reduced power consumption at the hydraulic pump. Because this synthetic formulation maintains a stable viscosity across a wide temperature range rather than relying on heavy viscosity index improvers, the system does not have to work as hard to move fluid through lines, valves and actuators. Equipment operators running excavators, skid steer loaders, aerial work platforms, log splitters, CNC machinery and injection molding presses can all benefit from reduced energy draw and shorter warm-up times.
SPECIFICATIONS AND COMPATIBILITY
AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil (product code HVI) meets or is suitable for use in applications requiring the following specifications:
It is compatible with systems containing bronze metallurgy and is suitable for high- and low-pressure gear, vane and piston stationary and mobile hydraulic systems. Use the correct ISO viscosity grade as specified by the equipment manufacturer.
SERVICE LIFE
AMSOIL Synthetic Multi-Viscosity Hydraulic Oil's resistance to thermal breakdown and oxidation promotes maximum fluid life, reducing the frequency of fluid changes compared to conventional hydraulic oils. Actual drain intervals should be determined through oil analysis based on the specific operating conditions, contamination levels and equipment manufacturer recommendations for each application.
| Property | ISO 46 (HVI) | Test Method |
|---|---|---|
| ISO VG | 46 | ASTM D2422 |
| Kinematic Viscosity @ 100°C, cSt | 8.5 | ASTM D445 |
| Kinematic Viscosity @ 40°C, cSt | 46.7 | ASTM D445 |
| Viscosity Index | 161 | ASTM D2270 |
| Flash Point, °C (°F) | 246 (475) | ASTM D92 |
| Fire Point, °C (°F) | 266 (511) | ASTM D92 |
| Pour Point, °C (°F) | -44 (-47) | ASTM D97 |
| Four-Ball Wear Test (40 kg, 1200 rpm, 75°C, 60 min.), mm | 0.41 | ASTM D4172 |
| Copper Strip Corrosion, 100°C, 3 hrs. | 1A | ASTM D130 |
| Foam (Seq. I, II, III), tendency/stability | 0/0, 10/0, 0/0 | ASTM D892 |
| Demulsibility (min.) | 40-40-0 (20) | ASTM D1401 |
| Dielectric Strength, kV AC | 44 | ASTM D877 |
| Seal Test Elastomer SRE-NBR 1, 100°C, 168 hrs. | Pass | ASTM D471 |
| Rust Test, Distilled and Salt Water | Pass | ASTM D665A & B |
| KRL Shear Test, 15% Max KV loss, Stay-in-Grade | Pass | — |
What equipment is AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil designed for?
AMSOIL ISO 46 100% Synthetic Multi-Viscosity Hydraulic Oil (HVI05-EA) is designed for a wide range of hydraulic applications across multiple equipment categories, including auto/light truck, motorcycle, ATV, UTV, snowmobile, marine outboard, PWC, heavy-duty on-road, heavy-duty off-road, and agriculture. Verified users have successfully used it in excavators, wood splitters, and air compressors. It protects pumps, motors, valves, servos, and other hydraulic components.
How does AMSOIL ISO 46 Multi-Viscosity Hydraulic Oil keep hydraulic systems clean and prevent varnish?
AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil is fortified with anti-varnish additives that chemically react with the building blocks of varnish, inhibiting its formation before it can cause problems. This varnish-control technology helps hydraulic systems remain clean for solid performance, immediate response, and fewer breakdowns. Maintaining cleanliness also reduces contaminants, which extends fluid life and reduces overall maintenance costs.
What specifications does AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil meet?
AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil meets the stringent viscosity-retention requirements of Parker Hannifin (Denison) HF-0. It demonstrates excellent anti-wear performance and compatibility with yellow metals in standardized laboratory and pump manufacturer tests. After 608 hours of strenuous pump testing in a Parker Hannifin (Denison) T6H20C Hybrid pump, piston shoes showed only moderate polishing and trace scratches, and the vane pump cam ring exhibited only light polishing and trace scratching.
How does AMSOIL ISO 46 Synthetic Hydraulic Oil compare to conventional hydraulic oils in hot and cold weather?
Unlike conventional mono-grade hydraulic oils that can thicken excessively in cold weather or thin out in extreme heat, AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil delivers year-round protection. In extreme heat, it resists thermal breakdown and maintains its protective viscosity for excellent wear protection. In cold weather, its excellent fluidity reduces pressure spikes and erratic operation, while also enabling shorter warm-up times for increased productivity.
How long does AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil last before needing to be changed?
AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil is formulated for long fluid life thanks to its varnish-control technology, thermal breakdown resistance, and shear-stable formulation that maintains viscosity over time. By keeping hydraulic systems clean and reducing contaminants, it helps extend service intervals and reduce maintenance. Specific drain intervals should be determined based on equipment manufacturer recommendations and operating conditions; consult the Product Data Bulletin for full details.
Is AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil safe for systems with yellow metal components like bronze and brass?
Yes, AMSOIL ISO 46 Synthetic Multi-Viscosity Hydraulic Oil demonstrates excellent compatibility with yellow metals such as bronze and brass. In 608 hours of strenuous pump testing in a Parker Hannifin (Denison) T6H20C Hybrid pump, the piston shoes — which are yellow metal components — showed only moderate polishing and trace, random scratches. The oil is fortified with the latest zinc-type anti-wear additives and meets Parker Hannifin (Denison) HF-0 requirements for yellow metal compatibility.
Product Details PDF - AMSOIL ISO 46 100% SYNTHETIC MULTI-VISCOSITY HYDRAULIC OIL
