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    What is Base Oil SN 150? Your Comprehensive Guide 

    Base Oil SN 150

    What is Base Oil SN 150?

    Base Oil SN 150 is a primary component in the lubricant industry, classified under Group I oils. It is derived from refining crude oil and is crucial for making various lubricant products.

    The Manufacturing Process of Base Oil SN 150

    The production of SN150 involves several key steps. Initially, crude oil fractions undergo solvent refining, a process that enhances the oil’s properties by removing unwanted components. Following this, the oil is dewaxed to improve its flow at lower temperatures. The final step, hydrofinishing, polishes the oil to increase its stability and purity.

    Key Properties of Base Oil SN 150

    Base Oil SN-150 is characterized by specific physical and chemical properties. It has a viscosity of around 5 to 7 cSt at 100°C and 24 to 28 cSt at 40°C. Typically, it contains a sulfur content that does not exceed 0.03% and a high level of saturates. These specifications ensure its performance in various applications.

    Applications of Base Oil SN 150


    Base Oil SN150 is widely used in the formulation of engine oils for both gasoline and diesel engines. It is also essential in producing industrial lubricants that keep machinery running smoothly.


    This base oil is a key ingredient in greases, where its properties help maintain viscosity and ensure the proper functioning of mechanical systems.

    General Purpose Oils

    SN150 is incorporated into general purpose oils where it functions primarily to reduce friction between mechanical parts, maintaining operational efficiency and preventing premature wear.

    Mould Oil

    In mould oils, Base Oil SN 150 is used for its properties that facilitate the easy release of cast or molded items from their forms without compromising the finish of the product, an essential quality in manufacturing processes.

    Transmission Fluids

    For transmission fluids, SN-150 provides the necessary viscosity and thermal stability that ensure smooth gear shifts and reliable operation under varying thermal conditions in automotive systems.

    Gear Oils

    SN150 contributes to gear oils by enhancing their load-bearing capabilities. It helps in maintaining the viscosity needed to form a protective film between gear teeth, preventing direct metal-to-metal contact and reducing wear.

    Metal Working Fluids

    In metalworking fluids, SN150 aids in cooling and lubrication. It helps to manage the heat generated during metal machining processes, thus improving tool life and machining accuracy.


    As a carrier oil in additives, SN150’s stable chemical composition allows for effective blending with performance-enhancing chemicals. This facilitates the distribution of additives in the final lubricant blend, improving protection against rust, oxidation, and wear.

    Hydraulic Oils

    In hydraulic oils, SN-150 is used for its ability to maintain fluid viscosity at different temperatures and pressures, which is critical for the efficient transfer of power in hydraulic systems.

    Transformer Oils

    SN150 is utilized in transformer oils, where it acts as a coolant and insulator to maintain the transformer’s operational integrity and extend its lifespan by preventing overheating and minimizing electrical disturbances.

    Metal Processing Fluids

    In metalworking, SN-150 facilitates the production of fluids that aid in machining and metal processing.

    Other Applications

    SN150 finds uses in lesser-known applications, such as mold release agents and as a blending component in other specialty lubricants.

    Advantages of Using SN150

    Base Oil SN 150 presents several significant advantages that make it a preferred choice in various industrial applications. Each benefit contributes to its popularity and widespread use across the lubricant manufacturing industry.


    One of the primary advantages of the SN-150 is its cost-effectiveness. Compared to Group II and Group III base oils, SN-150 is less expensive to produce and purchase. This makes it a popular option for businesses looking to manage costs while maintaining quality in their lubricant products. Its affordability also allows for competitive pricing in the production of oils, greases, and other related products.

    Good Solubility for Additives

    Another key advantage of Base Oil SN 150 is its excellent solubility with additives. The oil’s compatibility allows manufacturers to easily blend it with a wide range of performance-enhancing additives. This solubility is critical for creating specialized lubricants that meet specific requirements of thermal stability, oxidation resistance, and anti-wear properties. The ability to integrate seamlessly with additives makes SN-150 Base Oil a versatile base for formulating various lubricant products.

    Wide Availability

    SN150’s wide availability is a significant benefit that facilitates global trade and accessibility. Produced by numerous refineries around the world, SN-150 is readily obtainable, ensuring that manufacturers can secure a steady supply without facing shortages. This widespread production not only supports global operations but also helps in maintaining consistent quality and pricing in the market.

    Reliable Performance

    The reliability of SN150 in various applications further underscores its advantages. With stable viscosity characteristics and good performance at both high and low temperatures, SN-150 is suitable for a broad range of industrial and automotive applications. This reliability ensures that products made with SN 150 meet the rigorous demands of engines, machinery, and other equipment, enhancing overall efficiency and longevity.

    Where to Source Base Oil SN 150?

    Reputable manufacturers and suppliers of Base Oil SN 150 include major petroleum companies like ExxonMobil and Chevron. These companies ensure a consistent and reliable supply of high-quality base oil.

    The Knowledge of base oil groups (I, II, III, IV) and their ideal applications help you make informed decisions when selecting oil for your vehicle or industrial needs.

    By understanding base oil groups, you can choose the right lubricant for optimal engine protection and performance. Head over to the blog on base oil for a deeper dive into each group and its performance!

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