Base Oil
What is Base Oil?
Base oil is the raw oil used as a base for manufacturing engine oils, hydraulic oils, gear oils, and greases.
- Derived either from crude oil refining (mineral oils)
- Or from chemical synthesis (synthetic oils) like PAO, Esters
Global Classifications of Base Oils
According to the API (American Petroleum Institute) classification, base oils are divided into 5 main groups:
| Group | Source | Viscosity | Sulfur Content | Paraffin Content | Use |
|---|---|---|---|---|---|
| Group I | Simple crude distillation | Low | High | Low | Older oils, cheaper |
| Group II | More refined | Moderate | Less than 0.03% | Medium | Common in automotive oils |
| Group III | Highly refined (semi-synthetic) | High | Almost none | High | High-performance oils |
| Group IV | Synthetic – PAO | Stable | No sulfur | Excellent | Sports engines / industrial |
| Group V | Special synthetic – Esters | Variable | – | – | Special industries and greases |
Main Properties of Base Oil
| Property | Why is it important? |
|---|---|
| Viscosity | Determines flow resistance – essential for engine protection |
| Viscosity Index VI | Reflects viscosity stability with temperature changes |
| Pour Point | Lowest temperature at which the oil can flow |
| Color | Transparent yellowish or colorless |
| Thermal Stability | Resistance to oxidation at high temperatures |
Main Uses
- Gasoline and diesel engine oils
- Hydraulic oils
- Industrial oils, gears, and pumps
- Greases and industrial lubricants
Difference Between Base Oil and Finished Oil
| Item | Base Oil | Finished Oil |
|---|---|---|
| Composition | Pure base oil only | Base oil + additives |
| Color | Colorless / yellow | May contain artificial color |
| Direct use | No | Yes |
| Function | Chemical base | Complete final performance |
Production sources
Most prominent base oil producing countries:
- Saudi Arabia (Aramco – Luberef)
- South Korea
- Russia
- Singapore
- UAE (ADNOC)
- USA (Chevron, ExxonMobil)
European Group – Your commercial intermediary for base oils
If you are a distributor or manufacturer looking for pure and certified base oil, European Group Global Trading provides you with:
- Direct connection with trusted refineries in the Gulf and Asia
- Wholesale supply capability FOB or CIF
- Support in customs procedures and SGS inspection
Request an official BASE OIL quote now:
Email: info@europeangroup.financial
WhatsApp: +393274659937
Fill out the following form
And one of our specialized consultants will contact you within 24 hours: