A lubricant name can place several layers of information on one line, so begin by separating the elements rather than interpreting everything at once. First identify the brand and family, such as a family intended for a broad application category. Then identify the visible grade number or code and any additional descriptor. The family name helps you navigate a catalogue, but it does not by itself prove suitability for a particular machine. Similar product names also do not mean that formulations or performance are identical. A viscosity grade describes a specific aspect of fluid behavior under a relevant classification system; it is not a complete statement of quality or performance. Do not compare products by the number alone. Read the product data sheet and consult the equipment manual or buyer’s specification to confirm which system and requirement apply. Never turn a number in a trade name into an approval claim, and do not assume that neighboring grades are interchangeable without review. Performance claims, specifications, and formal approvals can carry different meanings and should be repeated exactly as they appear in current documentation. A document may state a performance level or alignment with a requirement, while an approval from an organization or manufacturer requires its own evidence. If a claim is absent from the approved product document, do not add it to an enquiry or comparison. Document date and revision matter as well: an old page or shared image may not represent the current approved version. For a comparison, make a simple four-column table: full product name, grade, exact specification or performance wording, and document number or link. Add packaging, destination, and quantity when ordering, but remember that these do not alter the technical meaning of the grade. If any field remains unclear, request the relevant document instead of filling the gap by assumption. The technical library is the starting point for available records; the final decision must match the equipment’s reliable reference and the operating requirements defined by the buyer or responsible specialist.