SN and SP oils are two different grades of automotive lubricants, and there are several reasons why SN grade oil is more expensive than SP grade oil.
First of all, the quality standards of SN grade oils are higher. Compared with SP oils, SN oils have lower viscosity, more complex additive formulations, and higher performance requirements for fuel economy, wear protection, sludge control, etc. This makes SN grade oils more expensive to produce and therefore more expensive.
Secondly, with the increasingly stringent environmental protection regulations, automobile manufacturers have higher and higher requirements for vehicle emission performance and fuel economy, which also prompts lubricant companies to continuously improve product performance. Therefore, lubricant companies need to invest more money and manpower in R&D, production, quality control, etc., to ensure that products meet higher quality standards. These costs will also eventually be passed on to the consumer, resulting in higher SN grade oils.
In addition, there are differences between different brands and types of lubricants**. Some high-end brands of lubricants are more particular about formulation, additives, packaging, etc., so they are also higher. At the same time, some special types of lubricants, such as biodegradable lubricants, synthetic lubricants, etc., are also relatively expensive due to their high production costs.
In summary, the main reason why SN grade oil is more expensive than SP grade oil is because of its higher quality standards, more expensive production costs, and increasingly stringent environmental regulations. When choosing a lubricant, consumers should choose according to the actual situation and needs of the vehicle to ensure that the vehicle is well protected and performed.