page_title: DEXRON
section_title: Aftermarket Automatic Transmission Fluids
hierarchical_section_title: DEXRON / Aftermarket Automatic Transmission Fluids
caption_attribution_description: English: Mobil Dexron II(D) for GM, Chrysler, and AMC Vehicles
context_page_description: DEXRON is the trade name for a group of technical specifications of automatic transmission fluid created by General Motors. The name is a registered trademark of GM, which licenses the name and specifications to companies which manufacture the fluid and sell it under their own brand names. Not all Dexron fluids are licensed for reselling under another brand name. All licensed Dexron fluids must have a license number that begins with the letters B through J. If no license number or "Dexron Approved" logo is found on the container, the fluid may not be GM approved and the fluid cannot be guaranteed to meet GM specifications. GM, like many automobile manufacturers, uses transmissions sourced from other suppliers or transmission manufacturers around the world; these transmissions are not manufactured by GM. Many of these automatic transmissions use unique fluids that might not be shown on this page.
  Originally the DEXRON name was associated exclusively with automatic transmission fluids, later GM released DEXRON gear oils and other lubricants under the DEXRON brand.
context_section_description: For over 70 years, the oil aftermarket has produced both licensed, and non-licensed, formulations of automatic transmission fluids (ATF). Today, aftermarket fluids asserted by their manufacturers to be compatible for use in General Motors automatic transmissions continue to be sold under names such as Dexron/MERCON, Multi-Purpose, and Multi-Vehicle fluids. Non-licensed fluid are typically less expensive; however, these fluids are not regulated or endorsed by GM for use in their transmissions. Vehicle manufacturer approved and licensed fluids must have the license number printed on the product information label of the container or on the container housing. Non-Licensed fluids do not show a license number. Make sure the fluid to be installed into a transmission matches the recommended fluid in the specifications section of the vehicle's owner's manual.
caption: Licensed Mobil ATF 220 Dexron II(D) for GM, Chrysler, and AMC Vehicles. GM License No. D-20104
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