| Product Code | Package Size | Unit of Measure |
|---|---|---|
| HVH05-EA | 5 Gallon Pail | Each |
| HVH55-EA | 55 Gallon Drum | Each |
| HVH27-EA | 275 Gallon Tote | Each |
AMSOIL ISO 32 100% Synthetic Multi-Viscosity Hydraulic Oil delivers anti-varnish protection, all-season fluidity and long component life for hydraulic systems that run hard in every climate. It is built on synthetic base oils that resist thermal breakdown in summer heat and flow freely in sub-zero cold, keeping pumps, valves, motors and servos operating with precision year-round.
Hydraulic systems face a relentless combination of high operating temperatures, moisture contamination, pressure cycling and tight-tolerance components that demand clean, stable fluid. Varnish buildup from oxidized oil is one of the most common and expensive problems in hydraulic equipment. It coats servo valves, restricts orifices, increases internal leakage and leads to sluggish response or outright failure. A conventional ISO 32 hydraulic fluid that breaks down under heat accelerates this cycle, shortening both fluid life and component life.
CONTROLS VARNISH BUILDUP AND KEEPS SYSTEMS CLEAN
AMSOIL Synthetic Multi-Viscosity Hydraulic Oil is fortified with anti-varnish additives that chemically react with the precursors of varnish, inhibiting its formation before it can deposit on critical surfaces. In aluminum beaker oxidation testing, the AMSOIL synthetic formulation resisted elevated heat and oxidation more effectively than a leading conventional ISO 32 hydraulic fluid. Clean systems mean fewer stuck valves, more consistent servo response and longer intervals between filter changes and fluid replacement.
ALL-SEASON PERFORMANCE WITHOUT FLUID CHANGES
The synthetic base oils in this formulation deliver a viscosity index of 165 (ASTM D2270), allowing it to maintain a strong lubricating film at high temperatures while flowing readily when cold. The pour point reaches -46°C (-51°F), which means equipment used on cold-morning startups in northern climates, logging operations or outdoor construction gets near-immediate lubrication without the pressure spikes and erratic actuator movement that come from sluggish, wax-laden conventional fluids. There is no need to swap between a lighter winter fluid and a heavier summer grade. One fill handles both extremes, reducing downtime and fluid inventory.
PROVEN WEAR PROTECTION FOR PUMPS AND YELLOW METALS
The formulation uses a shear-stable base with the latest zinc-type anti-wear additives. It meets the stringent viscosity-retention and anti-wear requirements of Parker Hannifin (Denison) HF-0. After 608 hours of strenuous pump 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. These results confirm strong compatibility with yellow metals, a critical consideration for systems with bronze bushings, thrust plates and wear rings. Four-Ball Wear Test results (ASTM D4172) show a scar diameter of just 0.42 mm at 40 kg load, 1200 rpm, 75°C for 60 minutes.
RESISTS FOAM AND SEPARATES FROM WATER
Foam in hydraulic fluid introduces compressibility, which kills response time and causes spongy, inconsistent actuator movement. AMSOIL Synthetic Multi-Viscosity Hydraulic Oil tested at 0/0, 10/0, 0/0 across all three sequences of ASTM D892 foam testing. Demulsibility testing (ASTM D1401) showed complete water separation at 40-40-0 in 25 minutes. Clean water separation reduces the risk of rust, microbial growth and accelerated additive depletion.
MAXIMIZES ENERGY EFFICIENCY
Because the synthetic base oils do not contain the waxes inherent to conventional mineral-based hydraulic fluids, internal fluid friction is lower. The fluid flows more readily through lines, valves and orifices at all operating temperatures, which reduces the energy the hydraulic pump must expend to circulate the fluid. This translates to lower operating temperatures, reduced electrical or fuel consumption on the prime mover and less heat load on coolers.
Specifications and Compatibility
AMSOIL ISO 32 Synthetic Multi-Viscosity Hydraulic Oil is suitable for high- and low-pressure gear, vane and piston stationary and mobile hydraulic systems, including those with bronze metallurgy. It meets or is suitable for use in applications requiring the following specifications:
Use the correct viscosity grade as specified by the equipment manufacturer. AMSOIL Synthetic Multi-Viscosity Hydraulic Oil is also available in ISO 22, ISO 46 and ISO 68 grades for applications requiring different viscosity ranges.
Service Life
AMSOIL Synthetic Multi-Viscosity Hydraulic Oil's resistance to oxidation and thermal breakdown promotes maximum fluid life. Drain intervals should be determined through oil analysis or by following the equipment manufacturer's recommendations, factoring in operating temperatures, contamination levels and duty cycle severity. The synthetic formulation's inherent stability typically allows extended service compared to conventional hydraulic fluids, reducing fluid disposal costs and maintenance labor.
| Property | ISO 32 (HVH) | Test Method |
|---|---|---|
| ISO VG | 32 | ASTM D2422 |
| Kinematic Viscosity @ 100°C, cSt | 6.5 | ASTM D445 |
| Kinematic Viscosity @ 40°C, cSt | 31.8 | ASTM D445 |
| Viscosity Index | 165 | ASTM D2270 |
| Flash Point, °C (°F) | 224 (435) | ASTM D92 |
| Fire Point, °C (°F) | 246 (475) | ASTM D92 |
| Pour Point, °C (°F) | -46 (-51) | ASTM D97 |
| Four-Ball Wear Test (40 kg, 1200 rpm, 75°C, 60 min.), mm | 0.42 | ASTM D4172 |
| Copper Strip Corrosion, 100°C, 3 hrs. | 1A | ASTM D130 |
| Foam (Seq. I, II, III) | 0/0, 10/0, 0/0 | ASTM D892 |
| Demulsibility | 40-40-0 (25) | ASTM D1401 |
| Dielectric Strength, kV AC | 45 | ASTM D877 |
| Seal Tests, 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 and applications is AMSOIL ISO 32 Synthetic Multi-Viscosity Hydraulic Oil designed for?
AMSOIL ISO 32 100% Synthetic Multi-Viscosity Hydraulic Oil (HVH05-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 run it in excavators (such as the Yanmar VIO 40-5), wood splitters, air compressors, and other hydraulic-powered equipment. It is formulated to keep valves, pumps, servos, and other hydraulic components clean, protected, and long-lasting.
How does AMSOIL ISO 32 Synthetic Hydraulic Oil keep hydraulic systems clean and prevent varnish buildup?
AMSOIL ISO 32 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. By maintaining cleanliness, the oil also reduces contaminants, which extends fluid life and reduces overall maintenance costs.
What specifications does AMSOIL ISO 32 Synthetic Multi-Viscosity Hydraulic Oil meet?
AMSOIL ISO 32 Synthetic Multi-Viscosity Hydraulic Oil meets the stringent viscosity-retention requirements of Parker Hannifin (Denison) HF-0. It demonstrated excellent anti-wear performance and compatibility with yellow metals in standardized laboratory and pump manufacturer tests, including 608 hours of strenuous pump testing in a Parker Hannifin (Denison) T6H20C Hybrid pump. The oil uses a shear-stable formulation fortified with the latest zinc-type anti-wear additives.
How does AMSOIL ISO 32 Synthetic Hydraulic Oil compare to conventional hydraulic fluid in hot and cold weather?
Unlike conventional hydraulic fluids that can thicken in cold weather and thin out in extreme heat, AMSOIL ISO 32 Synthetic Multi-Viscosity Hydraulic Oil delivers true all-season performance. 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 enabling shorter warm-up times for increased productivity. This multi-viscosity design eliminates the need for seasonal fluid changes.
How does AMSOIL ISO 32 Synthetic Hydraulic Oil extend fluid life and reduce maintenance intervals?
AMSOIL ISO 32 Synthetic Multi-Viscosity Hydraulic Oil promotes maximum fluid life through its varnish-control technology and resistance to thermal breakdown. By keeping the hydraulic system clean and free of contaminants, the oil helps reduce the frequency of fluid changes and overall maintenance requirements. Its shear-stable formulation maintains viscosity over time, and its foam resistance ensures consistent hydraulic performance throughout the service interval.
Is AMSOIL ISO 32 Synthetic Hydraulic Oil safe for yellow metal components in hydraulic systems?
Yes, AMSOIL ISO 32 Synthetic Multi-Viscosity Hydraulic Oil is fully compatible with yellow metals commonly found in hydraulic systems, such as brass and bronze components. After 608 hours of strenuous pump testing in a Parker Hannifin (Denison) T6H20C Hybrid pump, the piston shoes demonstrated only moderate polishing and trace random scratches, and the vane pump cam ring exhibited only light polishing and trace scratching. These results confirm the oil excels at protecting yellow metals while delivering excellent overall wear protection for pumps, motors, valves, and other hydraulic components.
Product Details PDF - AMSOIL ISO 32 100% SYNTHETIC MULTI-VISCOSITY HYDRAULIC OIL
