Is SL a semi-synthetic or full synthetic oil?

[KingAnn]

SL is a full synthetic oil. The introduction of full synthetic oil and semi-synthetic oil is as follows: Full synthetic oil: Full synthetic oil has better quality, and its use can be noticeably felt in the following aspects: smoother cold starts, more fuel-efficient, longer oil change intervals, equivalent to 1.5 times or more of conventional lubricants; extends engine lifespan, reduces maintenance rates; due to the superior cleaning properties of full synthetic oil, the engine block remains cleaner. Semi-synthetic oil: Semi-synthetic oil is made using semi-synthetic base oil, which is lubricant formulated from international Group III base oils. It is a product refined from mineral oil through hydrocracking technology, consisting of a 4:6 ratio of mineral oil to full synthetic oil. The purity of semi-synthetic oil is very close to that of full synthetic oil, but its cost is slightly higher than mineral oil, making it an ideal transitional product from mineral oil to synthetic oil.