{"id":679,"date":"2026-09-15T05:00:00","date_gmt":"2026-09-14T21:00:00","guid":{"rendered":"https:\/\/www.katmoto.com\/2026\/09\/15\/atf-specification-matching-importer-guide\/"},"modified":"2026-09-15T09:42:35","modified_gmt":"2026-09-15T01:42:35","slug":"atf-specification-matching-importer-guide","status":"publish","type":"post","link":"https:\/\/www.katmoto.com\/ja\/2026\/09\/15\/atf-specification-matching-importer-guide\/","title":{"rendered":"DEXRON-VI, MERCON LV, Toyota WS or Multi-Vehicle ATF? An Importer\u2019s Specification-Matching Guide"},"content":{"rendered":"
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Written and technically reviewed by:<\/strong> Leo Zhuang \u2014 Automotive Lubricants Product Lead
Published:

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Quick Answer<\/h2>\n

Do not buy ATF from colour, viscosity language or a broad \u201cmulti-vehicle\u201d claim alone. Identify the exact transmission and the OEM fluid requirement first. Then compare the supplier\u2019s current application list, TDS and label wording with that requirement. A DEXRON-VI-type product, a MERCON LV application, Toyota WS and MB 236.17 are separate purchasing checkpoints. Multi-vehicle ATF can reduce SKU count only where every target application is explicitly supported; it is not a universal replacement for CVT, DCT, e-CVT, DHT or dedicated OEM fluids.<\/p>\n<\/section>\n

\nTable of Contents<\/strong><\/summary>\n
    \n
  1. Why ATF specification matching comes before brand selection<\/a><\/li>\n
  2. DEXRON-VI, MERCON LV, Toyota WS and dedicated ATF compared<\/a><\/li>\n
  3. Dedicated-spec ATF versus multi-vehicle ATF<\/a><\/li>\n
  4. Why \u201clow viscosity\u201d does not prove compatibility<\/a><\/li>\n
  5. Application boundaries: AT, CVT, DCT, e-CVT and DHT<\/a><\/li>\n
  6. Seven-step importer selection workflow<\/a><\/li>\n
  7. Documents, label and shipment checks<\/a><\/li>\n
  8. Common purchasing and sales mistakes<\/a><\/li>\n
  9. B2B RFQ checklist<\/a><\/li>\n
  10. Frequently Asked Questions<\/a><\/li>\n
  11. Sources & References<\/a><\/li>\n<\/ol>\n<\/details>\n

    Why ATF specification matching comes before brand selection<\/h2>\n

    An automatic transmission fluid is part of a calibrated hydraulic and friction system. Its job includes transmitting pressure, controlling clutch engagement, cooling components, protecting gears and bearings, and maintaining seal and oxidation performance. Two fluids can both be described as low-viscosity ATF and still use different friction characteristics or application rules. For an importer, the commercial risk is not merely a dissatisfied driver; it is an incorrect fitment chart repeated across cartons, catalogues, marketplaces and workshop recommendations.<\/p>\n

    Start with the vehicle manufacturer\u2019s manual or a controlled transmission database. Ford\u2019s 2025 E-Series manual identifies MERCON LV and warns that another fluid can cause transmission damage. Toyota documentation specifies Toyota Genuine ATF Type WS for the cited application, while a GM owner manual specifies DEXRON-VI.[1]<\/a> [2]<\/a> [3]<\/a><\/sup> These examples show why one regional habit or one viscosity description cannot replace vehicle-level verification.<\/p>\n

    DEXRON-VI, MERCON LV, Toyota WS and dedicated ATF compared<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n
    Purchase route<\/th>\nTypical application signal<\/th>\nEvidence to request<\/th>\nDo not assume<\/th>\n<\/tr>\n<\/thead>\n
    Purchase route<\/td>\nTypical application signal<\/td>\nEvidence to request<\/td>\nDo not assume<\/td>\n<\/tr>\n
    DEXRON-VI type<\/td>\nTransmission documentation specifies DEXRON-VI<\/td>\nCurrent TDS, exact label, application statement and supplier support<\/td>\nThat every GM, Ford or Asian AT uses it<\/td>\n<\/tr>\n
    MERCON LV<\/td>\nFord application specifies MERCON LV \/ WSS-M2C938-A<\/td>\nVehicle manual plus supplier\u2019s explicit coverage<\/td>\nThat MERCON ULV, MERCON V or any low-viscosity ATF is interchangeable<\/td>\n<\/tr>\n
    Toyota WS<\/td>\nToyota\/Lexus application specifies ATF WS<\/td>\nManual and exact supplier application entry<\/td>\nThat colour or \u201cAsian vehicle\u201d wording proves fit<\/td>\n<\/tr>\n
    MB 236.17 type<\/td>\nNamed 9G-Tronic\/NAG3 application specifies MB 236.17<\/td>\nTransmission identification and product-specific evidence<\/td>\nThat older MB 236.10\/12\/14\/15 applications are the same<\/td>\n<\/tr>\n
    Multi-vehicle ATF<\/td>\nSupplier explicitly lists the exact OEM requirement and transmission<\/td>\nControlled application list with revision date<\/td>\nThat \u201cmulti\u201d means all AT, CVT, DCT, e-CVT or DHT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Dedicated-spec ATF versus multi-vehicle ATF<\/h2>\n

    Dedicated-spec products make the stocking logic easy to explain: one SKU is positioned around one named performance route. KATMOTO ATF DEXRON VI is presented for applications requiring DEXRON-VI-type low-viscosity ATF. KATMOTO ATF M9G is positioned for MB 236.17-type 9G-Tronic\/NAG3 applications and specifically excludes older Mercedes-Benz ATF routes and general DEXRON\/MERCON applications unless the vehicle requirement supports use.[4]<\/a> [6]<\/a><\/sup><\/p>\n

    A multi-vehicle product can consolidate slow-moving SKUs for workshops and distributors, but only after the application matrix is controlled. KATMOTO ATF MULTI lists several low-viscosity routes, including Toyota WS, Honda DW-1, Nissan Matic S, Hyundai\/Kia SP-IV, Mazda FZ, Ford MERCON LV\/SP and DEXRON-VI-type applications where compatibility is confirmed. Its product notice excludes CVT, DCT, e-CVT, DHT and proprietary fluids unless the vehicle maker explicitly permits use.[5]<\/a><\/sup> That conditional wording must survive every translation and catalogue edit.<\/p>\n

    \"KATMOTO
    A multi-vehicle ATF is useful only when each target application is explicitly supported.<\/figcaption><\/figure>\n

    Why \u201clow viscosity\u201d does not prove compatibility<\/h2>\n

    \u201cLow viscosity\u201d describes only part of the fluid. It does not identify the required friction curve, clutch material response, seal compatibility, aeration control or approved application. Even within one manufacturer, MERCON LV and MERCON ULV are different requirements. A buyer should therefore treat viscosity data as a screening field, not a cross-reference authority.<\/p>\n

    Colour is even less useful. Red, amber or another dye may help service identification, but colour is not an OEM performance specification. A dark used-fluid sample can indicate ageing or contamination, yet a new fluid\u2019s colour cannot prove that it matches a transmission. Procurement and workshop charts should display the named requirement, not a colour shortcut.<\/p>\n

    Application boundaries: AT, CVT, DCT, e-CVT and DHT<\/h2>\n

    Conventional step automatic transmissions use ATF, but the label \u201cautomatic transmission\u201d does not make every fluid suitable. Belt or chain CVTs use CVT fluid with dedicated friction behaviour. Wet-clutch DCTs use DCT fluid. Hybrid e-CVT and DHT units can integrate motors and electrical components and may require specific cooling, electrical and material-compatibility properties. Never place those systems inside a general ATF cross-reference unless the vehicle maker and product documentation explicitly support the exact application.<\/p>\n

    The same discipline applies to servicing. Drain-and-fill volume is not dry capacity, and many modern units require temperature-controlled level setting or special procedures. An importer should avoid publishing a universal fill quantity or service interval. Supply the correct fluid identity; direct workshops to the current service information for quantity, temperature, tools and procedure.<\/p>\n

    Seven-step importer selection workflow<\/h2>\n