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BASE OIL Group I refers to a category of base oils that are used in the production of lubricants and various other industrial applications. Base oils are the primary components of lubricants, providing viscosity, thermal stability, and lubrication properties to the final product. Group I base oils are produced from crude oil through a refining process known as solvent refining or solvent extraction.

Key characteristics of Group I base oils include:

Sulfur Content: Group I base oils typically have higher sulfur content compared to higher-quality base oils, which can impact their overall performance and environmental considerations.
Viscosity: These base oils generally have a higher viscosity index (VI) compared to the lower groups (Group II and Group III), which means they might not perform as well in extreme temperature conditions.
Performance: Group I base oils have relatively lower performance compared to higher-quality base oils such as Group II, Group III, and synthetic base oils. They are more suitable for basic lubrication applications where high-performance requirements are not critical.
Applications: Group I base oils are commonly used in industrial and automotive lubricants for less demanding applications. These include engine oils for older vehicles, industrial gear oils, and general-purpose lubricants.
Processing: The refining process for Group I base oils involves solvent extraction to remove impurities and undesirable components. This process results in base oils with a relatively lower level of purity and fewer molecular uniformity compared to higher-grade base oils.
It's worth noting that the categorization of base oils into groups (Group I, Group II, Group III, Group IV, and Group V) is based on their properties and refining methods. As industry practices and technologies evolve, there has been a trend toward using higher-grade base oils (Group II, Group III, synthetic, etc.) due to their improved performance characteristics, especially in modern engines and advanced industrial applications.