On order
CAT BIO HYDO ADVANCED
Synthetic ester hydraulic fluid with over 90% bio-based content, −30 to +45 °C
OECD 301B
Specifications
- Brand
- Caterpillar (Cat)
- Category
- Hydraulic oils
- Manufacturer code
- 30037
- Availability
- On order
Approved for
Typical characteristics
| Property | Typical value |
|---|---|
| Typical Environmentally | Typical Premium |
| Cat Bio HYDO Advanced | Benefits of |
| Long Drain Interval Capability | Yes |
| Suitable for Use in Environmentally | Yes |
| Renewable content, ASTM D6866 | >80% |
| Viscosity at 100ºC, ASTM D445 | 8.6 cSt |
| Viscosity at 40ºC, ASTM D445 | 44.3 cSt |
| Viscosity at 100ºC, ASTM D445 During Use | and Wide Operating |
| after Shear3 | 8.6 cSt |
| Pour point, ASTM D 97 | -45ºC |
| Brookfield Viscosity at -20ºC ASTM D2983 | 1,227 cP |
| Brookfield Viscosity at -30ºC ASTM D2983 | 3,039 cP |
| FZG Gear Test, DIN 51534, Fail stage | 4 |
| 4-Ball Wear Test, ASTM D4172 | 0.35 mm |
| 35VQ25 Total Wear, mg (Lower is better) | 25 mg |
| 1 minute | 7 min – 13 min |
| hours (1A is better than 1B, 1A at 150°C is | 1A at 150ºC |
| Corrosion Protection, ASTM D665B | Pass |
Complete documentation
We email you this product's sheets in a single archive.
Manufacturer's description
Cat Bio HYDO Advanced (HEES) is a synthetic ester based hydraulic fluid with more than 90% bio-based content (per ASTM D6866), developed for use across a wide range of applications, conditions and temperatures. Despite its environmentally friendly formulation, Caterpillar states it delivers the drain interval performance of a premium mineral-based hydraulic oil, with exceptional system protection, superior wear protection, corrosion resistance and fast air release comparable to premium mineral-based hydraulic oils. It is EU Flower eco-label certified and USDA BioPreferred-listed. The fluid is formulated with a low-foaming, fast-air-release chemistry and specially developed additives that form a protective wear layer on hydraulic pump and component surfaces, while emulsifiers hold water in dispersion rather than letting it separate and damage components. It is highly compatible with the seals used in Cat hydraulic systems, helping reduce leaks and maintenance costs, and maintains consistent wear protection across a wide temperature range. Typical values from the Cat technical data sheet include oxidation stability of more than 3,000 hours (dry, ASTM D943), a viscosity of 44.3 cSt at 40°C and 8.6 cSt at 100°C, a viscosity index of 176, a pour point of -45°C, and Brookfield viscosities of 1,227 cP at -20°C and 3,039 cP at -30°C (ASTM D2983). Caterpillar recommends it for ambient temperatures from -30°C to +45°C, and notes it is suitable for use in environmentally sensitive areas, with long-drain-interval capability confirmed by field testing.
Applications
- Synthetic ester-based hydraulic fluid for a wide range of applications and operating conditions, with reliable performance across a wide temperature range.
Performance & benefits
- EU Flower eco-label certified
- USDA BioPreferred® listed Extended Drain Intervals
- Excellent oxidation stability
- Comparable to premium mineral-based hydraulic oils Exceptional System Protection
- Superior wear protection
- Corrosion resistance
- Fast air release
- Low Foaming FormulaFeatures Protects Components
- Long LifeCat Bio HYDO Advanced outperforms the previously recommended and Provides Better Cat Bio HYDO and competitive brands. In fact, Cat Bio HYDO Advanced
- Hydraulic Controlperformance is comparable to premium mineral-based hydraulic oils. Like Cat HYDO Advanced, Cat Bio HYDO Advanced can be taken up to a 6,000 hour drain
- Good foam control and fast airinterval with S•O•SSM Fluid Analysis. release are important properties of hydraulic fluid. Biodegradability – >90% bio-based content (ASTM D6866) - fluid biodegradability to OECD 301B is 80% after 28 days. Air trapped in hydraulic oil reduces system response and causes Wide Temperature Range Protection – maintains consistent wear protection “sponginess” of controls. Trapped throughout the entire temperature range, -22°F (-30°C) – 113°F (45°C). From cold air also accelerates oil degradation. start through to operating temperature, Cat Bio HYDO Advanced gives you the
- Excessive air and foam can lead tobest system protection. cavitation (collapsing air bubbles) and damage to hydraulic components. Improved Flow Through Filters – retains its ability to flow through filters even when water is present. Cat Bio HYDO Advanced releases air very quickly and special additives Seal Compatibility – Cat Bio HYDO Advanced is highly compatible with the keep the hydraulic fluid clear of foam, seals used in Cat Hydraulic systems. This means fewer leaks and lower even when it becomes contaminated maintenance costs. with engine oil
- Component Protectionspecially developed additives form a protective layer on wear surfaces, reducing wear in hydraulic pumps and other components. Cat Bio HYDO Advanced provides excellent corrosion protection to steel and bronze Foaming Test Results components, even at high temperatures. (Contamination with 5% mineral oil)
- After 1 MinuteAfter 5 Minutes Emulsifiers – are additives designed to hold and disperse water contamination
Standards & approvals
OECD 301B
OECD 301B biodegradability above 60 %
A test result rather than a norm: OECD 301B measures the carbon dioxide evolved over 28 days. Above 60 % counts as "readily biodegradable", the threshold the environmental labels require.
SS 15 54 34
SS 15 54 34 — environmental requirements for hydraulic fluids (Sweden, generic)
The Swedish environmental standard for hydraulic fluids, cited here without a specific class letter.