How Importers Verify an API Engine Oil License Before Buying

Start with the marketer named on the finished container

API 1509 defines the oil marketer as the organization responsible for the integrity of the brand name and the way the branded product is represented in the marketplace. That point matters in contract manufacturing. The blender, packer, exporter, brand owner and importer may be different companies, but the license check must follow the marketer and brand that will actually appear on the finished container.

Ask the supplier to state the legal marketer name, API license number, proposed brand name and the exact company name that will appear on the front or back label. Compare those details with the official API record before discussing use of the API Marks. A certificate image or screenshot can support the file, but the live API directory should be the controlling public check because its status can change.

If the proposed structure changes—for example, from the manufacturer's brand to the importer's private label—repeat the review. API 1509 treats a difference in brand name, viscosity grade or service category as a separate engine oil for licensing purposes. Do not assume that one licensed house brand automatically covers an unrelated buyer-owned name.

• Review FLYSAK factory and certification evidence — Use the current evidence page as a starting point, then verify time-sensitive license details in the official directory.

Search the API EOLCS Directory in a reproducible way

API Publication 1520 points buyers to the online EOLCS Directory, which includes active licensees and their licensed products. The directory can be searched by company name, license number, brand, SAE viscosity grade, API service category, ILSAC specification, country and other fields. Save the search criteria and review date in the sourcing file so another team member can repeat the check.

Begin with the legal company name or four-digit license number supplied by the vendor. Open the company record rather than stopping at the search result. Then filter the product list by brand, viscosity and category. If spelling, punctuation or company identity differs from the label proof, ask for an explanation before approving artwork.

A zero-result search is not proof of fraud; it may reflect a spelling difference, a different marketer name or an incomplete proposal. It is, however, a reason to pause use of API trademark artwork until the supplier provides a record that can be independently reproduced.

Match the exact product instead of accepting a company-level claim

A supplier may legitimately hold an API license while also selling products that are not covered by the same category or mark. API 1509 requires product-specific information based on the final formulation, and it notes that a different viscosity grade, service category or brand name denotes a separate engine oil. The purchasing question is therefore not simply whether the company is licensed, but whether this product is licensed in this form.

Build one line in the approval matrix for every proposed SKU. Record the commercial product name, brand, SAE grade, API category, ILSAC classification where applicable, marketer, license number and directory review date. Compare that line with the TDS and label proof. If the quotation uses a family name while the directory uses individual products, require a clear written cross-reference.

FLYSAK's current passenger-car catalogue includes API SQ engine oils across several viscosities and performance routes. Buyers should still request the current product documents and applicable license evidence for the exact SKU they plan to order; a catalogue heading is not a substitute for the live product-level check.

• Compare the FLYSAK passenger-car engine oil catalogue — Review current viscosities, performance statements and pictured pack references.
• Review FLYSAK EO-021 SAE 0W-20 — Check the stated API SQ and ILSAC GF-7A route and request current documents.

Read the Donut, Starburst and Shield correctly

The API Motor Oil Guide distinguishes the API Service Symbol, commonly called the Donut, from the API Certification Marks known as the Starburst and Shield. The Donut shows the service category in the upper portion and the SAE viscosity grade in the centre, with an eligible additional classification in the lower portion. It should be read as structured information, not as a decorative badge.

For current passenger-car gasoline oils, the Starburst identifies oils meeting the applicable ILSAC GF-7A route, while the Shield identifies GF-7B oils. The current API guide states that the Shield applies to SAE 0W-16, and that the Starburst cannot be applied to 0W-16. That distinction gives artwork reviewers a quick reasonableness check, but the official directory remains necessary.

Request a high-resolution front and back label proof and compare the mark, words, category and viscosity with the licensed product record. Do not redraw, translate inside or alter an API mark for visual style. The final printer file should be approved only after the product and mark route agree.

Keep SAE viscosity, API performance and vehicle fitment separate

SAE J300 defines engine-oil viscosity grades in rheological terms; it does not include other oil characteristics. In practical procurement, SAE 0W-20 or 5W-30 describes viscosity behaviour, while API SQ or ILSAC GF-7A describes a performance route. An OEM specification or owner-manual requirement adds another application layer. None of these fields should be used as a shortcut for the others.

For each destination market, map important vehicles to the required viscosity, API or ILSAC category and any mandatory OEM approval. Then compare the supplier's licensed-product list with that matrix. A valid API SQ 5W-30 oil is not automatically the correct choice for a vehicle calling for a different viscosity or a separate manufacturer approval.

When one brand contains several viscosities, review each product separately and make the grade prominent in artwork, carton markings and warehouse coding. Similar-looking bottles can create picking and workshop errors even when every formulation is technically sound.

• Review FLYSAK EO-023 SAE 5W-30 — Compare another viscosity under the current passenger-car range.
• Read the hybrid engine oil supplier guide — See how vehicle requirements, viscosity and performance categories are separated for hybrid ranges.

Resolve the private-label licensing structure before artwork

Private label changes the brand and often changes the marketer named on the package. API 1509 clarifies that the marketer is responsible for the brand's integrity and representation, and its licensing clarifications address oils resold under another company's name. Importers should not assume that permission to buy a licensed formulation also grants permission to place API Marks on a new brand.

Ask the supplier to map the proposed arrangement in writing: legal marketer, brand owner, manufacturer or packer, API licensee, licensed brand and licensed product. Confirm what must be completed before the API Marks can appear on the buyer's label. Keep unlicensed draft artwork free of API trademark claims until the applicable route is confirmed.

The same review applies when changing suppliers. If the brand name remains the same but formulation, manufacturer, marketer or license route changes, require updated evidence and artwork approval rather than carrying the previous supplier's license assumptions into the new order.

• Review FLYSAK private-label support — Organise the product, packaging and document discussion around the confirmed programme.
• Compare a replacement or second-supplier route — Use current specifications and evidence when moving an existing brand.

Connect the license check to documents and batch traceability

The public directory answers an important question, but it does not replace the supplier document pack. Request a current TDS, SDS, written product specification, applicable license evidence, representative performance support, sample batch COA and approved front and back labels. The product names and viscosity grades should agree across those records.

API's monitoring programme checks packaged and bulk oils and also examines package marking and product trace codes. For the importer, the practical control is a legible batch or date code that connects the shipped pack to production and release records. Agree the code format, sample COA and retained-sample process before the first commercial order.

Define change control as part of the supply agreement. A change in formulation, brand name, viscosity grade, service category, marketer, label, packer or license status may require a fresh review. Advance notice protects the importer from continuing to print or distribute claims that no longer match the approved route.

Send an RFQ that makes license gaps visible early

A useful RFQ lists the destination countries, vehicle groups, viscosity grades, required API or ILSAC categories, any OEM specifications, proposed brand name, marketer name, pack sizes, label languages and first-order mix. Ask the supplier to return the license number, directory cross-reference, proposed SKU matrix, document list, finished-sample plan and any unsupported items.

Review the technical and licensing route before negotiating around a printed-bottle minimum. Otherwise, a buyer can approve a large quantity of labels or cartons before learning that the proposed brand, category or mark needs a different route. Commercial terms should be compared only after the product and artwork basis is clear.

FLYSAK can organise a passenger-car engine oil proposal around its current catalogue, private-label packaging process and available product documents. Importers should provide the target market, brand structure, vehicle requirements, grades and order plan, then verify the applicable API evidence before approving artwork or ordering printed packaging.

• Send your engine oil sourcing brief — Share the market, brand structure, required grades, specifications, pack sizes and first-order plan.

Frequently asked questions