Chorus offers a selection of gear oil additives and transmission fluid additives.
- EP Gear Oil Additive Packages
- Limited Slip Diff Oil Additive
- Compounded oils (CP) additive package for worm gear drives.
These additive packages are mainly formulated of S-content lubricant additives, such as Sulfurized Olefin.
Chorus also offers other transmission fluid additive packages. Please click the following link to learn more about these transmission oil additives.
Industrial Gear Oil Types
By Standard AGMA 9005 (American Gear Manufacturers Association)
Inhibited oils (RO)
These are commonly referred to as rust and oxidation inhibited, or R&O lubricants. They are formulated with highly refined petroleum or synthetic base oils and contain additives that enhance oxidation stability, provide corrosion protection, and suppress foam. Their superior oxidation stabilities typically set them apart from other gear oil types. However, their load-carrying capabilities (as measured by standard tests that assess these characteristics) may be less than others. These oils are generally associated with higher speed and lighter load applications.
Antiscuff/antiwear oils (EP)
In addition to protection against corrosion and oxidation, these oils contain additives which provide protection against unacceptable wear and scuffing. These oils are formulated with refined petroleum or synthetic base oils. They are generally used in ISO VGs of 150 and above, and were developed to protect geared systems operating at high loads and severe impact or reversal conditions.
Compounded oils (CP)
Compounded gear oils are a blend of petroleum base oils with three to ten percent of natural or synthetic fatty oils. These lubricants are frequently used in worm gear drives.
Gear oil classification:
| Gear Oil Type | Formula |
| R&O | Mineral oil + antioxidant + rust inhibitor (without EP additives) |
| EP | Mineral oil + EP additives ( sulfur-phosphorus extreme pressure agents) |
| CP | Mineral oil + fatty oil or synthetic ester (generally used for worm gears) |
Vehicle Gear Oil Types
By API 1560-2013《Lubricant Service Designations for Automotive Manual Transmissions, Manual Transaxles, and Axles》
| ITEM | Applications | Remarks / Status |
| GL-4 | Intended for spiral-bevel and hypoid gears operating under severe conditions of speed and load, and for manual transmissions and drive axles. Note: While this service designation remains in commercial use for describing such products, the performance test hardware is no longer available. | Still referenced commercially, but performance test rigs are unavailable. |
| GL-5 | Intended for gears, particularly hypoid gears in automotive axles, operating under high-speed/shock-load or low-speed/high-torque conditions. | Current mainstream standard. |
| MT-1 | Intended for non-synchronized manual transmissions used in buses and heavy-duty trucks. Provides protection against thermal degradation, component wear, and deterioration of oil seals – performance features not provided by GL-4 or GL-5 oils. | Specifically for non-synchronized manual transmissions. |
General-Purpose Gear Oil Additive Packages
Since the EP/AW additives used in modern automotive and industrial gear oils are essentially similar, general-purpose gear oil additive packages have emerged. These compound formulations are designed to meet the performance of both automotive and industrial gear oils.
When blending the gear oils, the operator simply adjusts the treat rate of the additive package to get the desired class of gear oils.
Recommended Treat Rate of Multifunctional Gear Oil Additive Package T4218
| Performance Level | Treat Rate (wt%) |
| API GL-5 | 3.8 |
| API GL-4 | 1.9 |
| Heavy Load Industrial Gear Oil | 1.5 |
| Low/Medium Load Industrial Gear Oil | 1 |
FAQ for gear oil additives and transmission fluid additives.
Q: May I have a sample of your gear oil additive??
A: Additive Samples are available for qualified buyers to evaluate. Please submit a request via our website or contact sales.
Q: What is the packaging of your oil additives?
A: Standard options include 200L drums (palletized) or IBC. Custom packaging is available for bulk orders.
Q: What is the MOQ for EP gear oil additives? And the price?
A: MOQ starts at 200kg ( one drum). Pricing varies by purchase quantity and the trade terms —contact us for a quote based on your volume and requirements.
Q: Do you have a GL-5 gear oil additive package?
A: Yes, T4216, T4218, and T4231 are gear oil additives for the blending of gear oils GL-5 and GL-4.
Q: What is the shelf life of your lubricant additives?
A: Most gear oil additives have a shelf life of 1 - 2 years when stored in sealed containers at room temperature.
Q: What are your gear oil additives used for?
A: Chorus gear oil additives are mainly used to formulate gear oils, including automotive gear oils and industrial gear oils. Our clients are mainly lubricant oil blenders.
We're professional gear oil additive packages manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy customized gear oil additive packages at competitive price from our factory. Contact us for more details.
automotilve gear oil additive, Gear Oil Additive Packages