2710.99.31.00 - Of oils

This HTS category, 2710.99.31.00, specifically covers waste oils that are derived from lubricating oils and greases. This includes substances that were previously used as lubricants and have undergone degradation or contamination, rendering them unsuitable for their original purpose. The classification encompasses such waste oils regardless of whether they contain any additives, which are often incorporated into new lubricating oils to enhance their performance.

The key distinction of this subcategory lies in its focus on "oils" derived from the waste stream of lubricating products. This differentiates it from its sibling category, "Of greases," which would specifically classify waste products originating from greases. While both fall under the broader "Waste oils" umbrella, the physical form and primary composition of the waste material are the determining factors for classification.

As this is a leaf node in the HTS structure, there are no further subdivisions under this specific code. Classification decisions at this level will hinge on confirming that the material in question is indeed a waste oil product originating from lubricants and that it does not fit into more specific categories for crude petroleum oils, refined oils, or other types of waste oils not specifically addressed here. The presence or absence of additives is a characteristic to note but does not create separate subcategories at this level.