A lubricant technical data sheet can help you compare two offers, but only when both sheets describe the right product and grade. Start with the machine requirement, then check the values and the wording behind each claim. This guide gives purchasing teams a practical way to record that review before placing an order.
1. Match the TDS to the exact product
Check the product name, grade, document date and supplier first. A sheet for one grade in a product family may not describe another grade. Keep the document with the quotation so your technical and purchasing teams review the same item.
For example, an inquiry that says “hydraulic oil 46” leaves part of the requirement open. Record the fluid type and the performance requirement from the equipment manual as well. If your list says HM 46, keep that full name when requesting the lubricant technical data sheet.
If the application is still unclear, use our lubricant selection guide to gather the missing equipment information. A clear requirement gives you a useful basis for comparison.
2. Compare properties on the same basis
Read the units, test temperature and test method beside each value. A viscosity measured at 40°C does not answer the same question as a value at 100°C. Likewise, a number without its test method may be hard to compare with another supplier’s sheet.
| TDS entry | What to record | Question to ask |
|---|---|---|
| Kinematic viscosity | Value, unit, temperature and method | Are both sheets showing the same test basis? |
| Viscosity index | Value and method | Has the technical team reviewed temperature changes in this application? |
| Pour point | Temperature and test method | What does the equipment maker require for cold starting? |
| Performance statements | Exact standard or approval wording | What evidence supports the requirement on our list? |
| Document revision | Date or version | Does this sheet apply to the product being offered? |
The Society of Tribologists and Lubrication Engineers’ hydraulic fluid guide explains why viscosity, temperature behavior and the equipment maker’s limits belong in the same review. Treat a single property as one part of the decision.
3. Separate typical values from agreed limits
Look for the note below the property table. Some data sheets show typical values rather than guaranteed limits for every batch. For instance, Mobil’s published product data expressly distinguishes typical properties from a specification.
That distinction matters when you write a purchase order. If your receiving team needs a specific acceptance range, test report or batch document, ask about it before ordering. State the required test method and limits rather than copying a typical value into the order as a guarantee.
Example: “Please confirm the agreed viscosity range, test method and available batch documentation for this item.” This is more useful than asking the supplier to confirm that every batch will match every printed number exactly.
4. Read approval claims word for word
Keep “approved,” “meets requirements” and “recommended for” as separate entries in your comparison. Ask for the applicable supporting document when your equipment or purchasing policy requires formal approval. A broad product description does not settle that check.
For engine oils, a viscosity grade also needs the relevant performance requirement. The API service category guidance tells users to consult the vehicle manual. Bring that requirement into the inquiry rather than choosing by the front label alone.
5. Request the SDS separately
The TDS and safety data sheet serve different purposes. The TDS describes the product and its intended uses. The SDS provides handling, storage and hazard information. Shell’s document guidance describes this distinction.
Ask for the current SDS for the offered product and destination. Send it to the people responsible for transport, storage and workplace handling. Keep any destination-specific document questions separate from your performance comparison.
6. Turn the review into a clear inquiry
Put the product name, grade, required standard and outstanding document questions on one line item. Add the pack size, quantity and destination so the supplier can review both the technical requirement and the proposed order.
- Save the exact product name, grade and TDS revision.
- List the properties your technical team needs to review.
- Keep open approval and batch document questions with the inquiry.
You can start with our hydraulic oil collection or engine oil collection. When you request a lubricant technical data sheet, include the exact item you are considering. We can then discuss which product information is available for your review.
