One option for the GL4 gear oil additive package is T4201C gear oil additive.
This additive is specially formulated to enhance the performance and protection of manual transmission systems. It is designed to be compatible with GL4 gear oil, providing better wear protection, smoother shifting, reduced friction and heat build-up.
T4201C is an additive specially developed for gear transmission system lubricants.
Suitable for blending heavy-duty automotive gear oil and industrial gear oil. This product meets the requirements of API GL-5, GL-4, and USS 224 specifications.
Another option is T4201C gear oil additive.
T4201G is a high-quality, low-odor functional compound additive specially developed for gear transmission system lubricants. It is suitable for formulating heavy-duty vehicle gear oils and industrial gear oils. The product complies with API GL-5, GL-4, and USS 224 specifications.
Both products are lubricant additive packages from Shanghai Minglan Chemical Co., Ltd., which meet the specification requirements of bench tests and have excellent product performance and reliable quality.
Shanghai Minglan Chemical Co., Ltd. has significant advantages in technology, which are specifically reflected in the following aspects:
R&D capabilities: The company has a professional R&D team that continuously invests in new product research and development, focusing on product innovation and quality improvement.
Production technology: The company adopts advanced production technology and technology to ensure product quality and stability.
Quality control: The company strictly controls product quality and implements strict quality control measures in all aspects from raw material procurement to production, packaging, and transportation.
Shanghai Minglan Chemical Co., Ltd. is a well-known enterprise specializing in the research, development, production and sales of chemical products. Since its establishment, the company has rapidly emerged as a leader in the chemical industry with its excellent technology, high-quality products and good services.
Based on the business philosophy of honesty, truth-seeking, mutual benefit, and service-oriented, the company adheres to the concept of continuously enhancing its professional and technical strength and customer-oriented service system, and is committed to becoming a world-class lubricant additive expert. Shanghai Minglan Chemical Co., Ltd. is willing to grow and make progress together with friends from all over the world.
⚙️ Typical Properties You Should Target for GL-4 Additives
| Property | Target |
|---|---|
| Timken OK Load | ≥ 60 lbs |
| FZG Load Stage | ≥ 10 |
| Copper Corrosion (ASTM D130) | 1b or better |
| Compatibility | Group I/II/III or PAO oils |
| Yellow Metal Protection | Required for manual transmissions |
🧪 Example GL-4 Gear Oil Formulation (SAE 80W-90)
| Component | Dosage (wt.%) |
|---|---|
| Base Oil (Group I/II) | ~85.0% |
| GL-4 Additive Package (e.g., HiTEC 343 or ML-G401) | 10–12% |
| Viscosity Index Improver (if multigrade) | 2–4% |
| Pour Point Depressant | 0.3–0.8% |
| Anti-foam Agent | 0.05% |
🧭 How to Select the Right Additive Package
- Performance Needs: Ensure it meets API GL-4 and OEM specs (ZF, MAN, etc.).
- Yellow Metal Safety: GL-4 must not corrode brass/bronze synchronizers.
- Base Oil Compatibility: Check if compatible with mineral, synthetic, or semi-synthetic oils.
- Supply Chain: Choose local (e.g. Minglan) or global supplier (e.g. Minglan) depending on your region and budget.
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