Hydraulic Fluids
Recommended Fluids
The fluids listed here work well over a wide temperature range at start-up, allow moisture to settle out, and resist biological growth likely in cool-operating hydraulic circuits. These fluids are recommended by Stanley Hydraulic Tools for use in our tools. Other fluids that meet or exceed the specifications of these fluids may also be used. Biodegradable fluids listed are compatible with all tool seals and hoses.
| BRAND | BIODEGRADABLE | DESCRIPTION |
| CITGO | No | Hydurance AW32 |
| AMS Oil | No | HVH 32 |
| Exxon Mobil | No | Univis HVI26* |
| Exxon Mobil | No | DTE 10 Excel |
| Shel | No | S2 V 32 |
| Chevron | No | Rando HDZ 32 |
| Conoco Phillips | No | Unax AW-WR-32 |
| Clarion (CITGO) | Yes | Green Bio 32 |
| Exxon Mobi | Yes | EAL 224H |
| Chevron | Yes | Clarity AW32 |
| Terresolve | Yes | Envirologic 132 |
| Shell | Yes | Naturelle HF-E-32 |
Specifications
The specification listed here will provide good all season operation if your circuit is of proper design and normal maintenance is performed. (Periodic filter change, draining of condensate, etc.)
| ITEM | METRIC | U.S.A. |
| Viscosity (Fluid Thickness) | 10° C 95 Centi- stokes Max. | 50° F 450 SSU Max |
| Viscosity (Fluid Thickness) | 38° C 27-42 Centistokes | 100° F 130-225 SSU |
| Viscosity (Fluid Thickness) | "60° C 16.5 Cen-tistokes Min." | 140° F 85 SSE Min |
| "Pour Point (Min.for cold startup)" | 23° C | -10° F |
| Viscosity Index | 140 Minimum | (ASTM D2220) |
| Demulsibility | 30 Minutes Max. | (ASTM D1401) |
| Flash Point | 340° F Min. | (ASTM D92) |
| Rust Inhibition | Pass | (ASTM D665 A&B) |
| Oxidation | 1000 Hours Min. | (ASTM D943) |
| Pump Wear Test | 60 mg Max | (ASTM D2882) |
| Biodegradability | >60% | CEC-L-33-A94 |