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Synthetic Thermally Stable Biodegradable Hydraulic Oil (ISO 32/46)

Denison HF0, HF1, HF2, Vickers M-2950-S, I286-S, and Cincinnati Milacron P-68, P-69 and P-70

Product Description
AMSOIL TBI hydraulic oil is a premium lubricant designed to biodegrade to its natural state when subjected to sunlight, water and microbial activity. TBI has a very low toxicity level because the oil is formulated with ashless additives that do not contain heavy metals.

AMSOIL TBI incorporates very high quality synthetic base oils that provide thermal stability, even though they are biodegradable. This oil also contains anti-wear additives that have been thoroughly tested and qualified against stringent hydraulic oil standards including Denison HF0, HF1, HF2, Vickers M-2950-S, I286-S, and Cincinnati Milacron P-68, P-69 and P-70. TBI provides optimum protection for your hydraulics because it prevents wear of the pump and prevents rust of critical components. TBI contains anti-oxidants that increase the life of the oil and it contains foam inhibitors that quickly release air from the oil.

TBI outperforms vegetable oil-type, biodegradable hydraulic oils because it is based on high quality, synthetic oil chemistry that lasts longer and withstands heat better. This ensures problem-free operation.

Performance Features

  • 80% Biodegradable Within 21 days (CEC L-33-T-82)

  • Thermally Stable

  • Resists Oxidation

  • Prevents Rust and Foam

  • -52F Pour Point For Cold Temperature Performance

  • Outperforms Vegetable Type Bio-Hydraulic Oils

Application Recommendation
AMSOIL TBI is recommended for gear, vane and piston stationary and mobile hydraulic systems. TBI is a multi-viscosity, SAE 5W-20 oil and is recommended for use in place of either ISO-32 or ISO-46 hydraulic oils.

TBI is essentially compatible with typical hydraulic oils and small amounts of contamination (lines, residue) is acceptable. However, it is recommended that systems be drained prior to installing TBI. Excessive system contamination will minimize its biodegradability effectiveness.

TBI is especially well suited for applications where environmental contamination due to leaking or blown hydraulic lines presents an environmental hazard.

TBI has been tested and found compatible with Nitrile (Buna-N), Poly Acrylate, Flourocarbon (Viton) and Silcone seals which are commonly found in hydraulic systems. Consult your AMSOIL sales representative or AMSOIL INC. when dealing with systems containing seals not listed.

The ability of TBI to extend drain intervals and excel in performance is subject to operating conditions and maintenance practices. Monitoring by oil analysis is recommended.


Typical Technical Properties

Synthetic TBI Hydraulic Oil
ISO VG - ASTM D-2422 32/46
SAE Grade 5W-20
Viscometrics 100C, cSt - ASTM D-445 7.69
Viscometrics 40C, cSt - ASTM D-445 40.63
Viscosity Index - ASTM D-2270 161
Specific Gravity - ASTM D-1298 0.9047
Density - ASTM D-1298 7.534
Four-Ball Wear Test
(40 kg, 1200 rpm, 75C, 60 min.) - ASTM D-4172
Flash Point C (F) - ASTM D-92 206C (402F)
Fire Point C (F) - ASTM D-92 222C (431F)
Pour Point C (F) - ASTM D-97 -47C (-52F)
Copper Strip Corrosion Test - ASTM D-130 1A
Foam ASTM D-892
  Sequence I
  Sequence II
  Sequence III

Demulsibility ASTM D-1401
  Oil/Water/Cuff (minutes)

40/40/0  (25)
Dielectric Strength, KV - ASTM D887 36KV
Biodegradability % - CEC L-33-T-82 80

AMSOIL Product Availability
AMSOIL products are available in 5-gallon pails, 55-gallon drums, 275-gallon totes and bulk quantities. For 275-gallon totes, please allow two to four weeks for delivery.