A hydraulic oil additive package is a concentrated blend of antiwear agents, antioxidants, rust inhibitors, demulsifiers, antifoams and metal deactivators that gives hydraulic fluids their service life and reliability. It is the difference between a hydraulic system that runs for years and one that suffers pump wear, varnish and sludge. This guide covers package composition, standards and selection.
What a Hydraulic Oil Additive Package Must Deliver
- Antiwear protection: zinc dithiophosphate-based chemistry protects vane and piston pumps under high pressure.
- Oxidation stability: antioxidants extend oil life and prevent varnish and sludge formation.
- Rust and corrosion inhibition: protects steel surfaces from water contamination.
- Demulsibility: rapid water separation so free water can be drained.
- Foam control and air release: prevents pump cavitation and spongy response.
- Hydrolytic stability: resistance to decomposition in the presence of water.
Minglan Hydraulic Oil Package Grades
| Grade | Type | Standard | Treat rate |
|---|---|---|---|
| T5012C-2 | Zinc-containing antiwear (L-HM, HV, HS) | GB 11118.1, Denison HF-0, ISO 11158, DIN 51524(II) | 0.6-0.8% |
| T5012A-1 | Zinc-containing antiwear | GB 11118.1 | 0.6-0.8% |
| T5017 | Hydraulic transmission fluid | Multi-purpose | 1.0-1.6% |
| T5020A | Ashless antiwear | Denison HF-0, DIN 51524(II) | 0.65-0.8% |
| T5040 | Fire-resistant water-glycol (HFC) | GB/T 21449, Denison HF-4 | 8.0-15.0% |
See the hydraulic oil additive package page and the T5012C product page for full details.
Selection Guide for Buyers
- Identify the target viscosity grade (ISO VG 32, 46, 68) and the OEM specification (Denison HF-0, Cincinnati Milacron, Vickers).
- Choose zinc or ashless chemistry: zinc packages are cost-effective; ashless (T5020A) suits applications where zinc is restricted.
- Verify demulsibility and filterability in your base oil with the actual treat rate.
- Request batch certificates and, for critical applications, the Denison HF-0 test report.
Why Minglan
Shanghai Minglan Chemical manufactures hydraulic oil additive packages for antiwear, ashless, transmission and fire-resistant fluids, backed by in-house laboratory testing. Contact info@minglanchem.com for samples, specifications and technical support.
