Synthetic Ester Base Oil | BasOil

BasOil is a global manufacturer of synthetic ester base oils, providing tailored solutions for premium lubricants and specialty fluids. With more than 30 years of engineering experience and an annual production capacity of over 8,000 tons, we are recognized for delivering high-purity and stable monoesters, diesters, polyol esters, and complex esters that meet international quality standards.

Synthetic Ester Base Oil Types

• Monoesters – Excellent low-temperature fluidity and flash point stability.

• Diesters – Enhanced shear stability and thermal resistance.

• Polyol Esters – Designed for heavy-duty gear oils, high-temperature chain oils, and compressor lubricants.

• Trimellitates & Polyacid Esters – Applied in transformer oils, turbine oils, and fire-resistant hydraulic fluids.

• Complex Esters – Balanced properties combining low pour point, high VI, and oxidation stability.

Technical Properties & Performance

BasOil synthetic ester base stocks are engineered to deliver consistent performance in demanding environments. Key measurable parameters include:

Applications

BasOil synthetic ester base oils are widely used in high-performance lubricants across multiple industries:

• Automotive engine oils

• Industrial and EP gear oils

• High-temperature chain oils

• Aviation turbine and jet engine oils

• Fire-resistant hydraulic fluids

• Refrigeration and compressor oils

• Metalworking fluids and specialty lubricants

Explore related base oil categories for detailed solutions:

Transformer Oil Base Oil |      Gear Oil Base Oil |      High-Temperature Chain Oil Base Oil |      Aviation Engine Oil Base Oil

Customization & Engineering Support

BasOil offers tailored development of ester base oils according to customer requirements:

1. Provide target specifications (viscosity, flash point, pour point, operating temperature).

2. Our engineers design ester structures and prepare lab samples.

3. Samples undergo client testing for viscosity, thermal stability, and cold-flow properties.

4. Formula adjusted based on performance feedback until specifications are met.

5. Bulk production with flexible packaging (sample bottles, drums, or container shipments).

Typical sample delivery: 7-14 days. Minimum order quantity depends on formulation and production batch size.

Quality Control & Storage

Every batch of BasOil synthetic ester base oils is manufactured and tested under strict quality protocols:

• High-purity acids and alcohols with low moisture content.

• Controlled esterification process with vacuum dehydration and acid removal.

• Comprehensive ASTM / ISO laboratory tests: viscosity index, flash point, oxidation, hydrolysis, TAN, and density.

• Guaranteed shelf life: 12 months under sealed, dry, cool storage conditions.

• Packaging options include samples, 200 L drums, and IBC containers.

BasOil Capabilities & Clients

With an annual ester oil capacity of 8,000 tons, including 2,000 tons of polyester esters, BasOil supports large-scale and specialty applications. Our products are supplied to leading OEMs and industrial clients, including Sinopec, FAW, and Liugong, and are exported to multiple countries in Europe and Asia.      Our engineering team has decades of experience in fine-tuning ester structures to deliver optimal balance between viscosity index, pour point, and flash point.

Market Trends & Competitive Advantages

Synthetic esters (API Group V) are increasingly chosen for advanced lubricants requiring low-temperature performance, extended drain intervals, and higher environmental standards. Global majors such as BASF SYNATIVE® and ExxonMobil Esterex highlight similar benefits, but BasOil differentiates by:

• 30+ years of ester formulation expertise.

• High-purity production with strict batch-to-batch consistency.

• Competitive pricing while maintaining OEM-level performance.

• Flexible customization for niche industrial and automotive applications.

Frequently Asked Questions