The transmission was called the Automatic Safety Transmission (AST) because the clutch operation was reduced to one-third of that required by a conventional transmission. The Automatic Safety Transmission was a 4-speed transmission providing full-power shifting without the need for a conventional clutch. The automatic safety transmission used the same seasonal grade of motor oil as the engine for lubrication and hydraulic functions. It was only used during the 19 model years. The automatic safety transmission was first offered as an extra-cost option by the Oldsmobile Division of GM in the fall of 1937 for their Six and Eight models. See the details below for the backward compatibility of each fluid.īefore Dexron: 1937–1967 1937 – Motor Oil ġ940 GM Hydra-Matic automatic transmission fluid There remains a market for older fluids that claim to meet the earlier fluid specifications. Newer 6, 8, 9, and 10-speed transmissions, as well as plug-in hybrid (PHEV) and electric vehicle (EV) transmission technologies, require specialized fluids to operate properly. The newer fluids are not always backward-compatible with previous fluids. GM has upgraded the Dexron's specifications over time. Over the years, the original Dexron (B) was supplanted by Dexron-II (C), Dexron-II (D), Dexron-II (E), Dexron-III (F), Dexron-III (G), Dexron-III (H), Dexron-VI (J), Dexron HP, Dexron LV ATF HP, and Dexron ULV, which is the latest fluid. The original Dexron (B) transmission fluid was introduced on April 1, 1967. Originally, the Dexron name was associated exclusively with automatic transmission fluids, though GM later released Dexron gear oils and other lubricants under the Dexron brand. Like many automobile manufacturers, GM uses transmissions sourced from other suppliers or transmission manufacturers around the world many of these may use their own unique fluid.
#Dexron iii mercon License number
To be licensed, the product must have a license number that begins with the letters B through J and include a "Dexron Approved" sticker on its container. Not all Dexron fluids are licensed by GM for reselling under another brand name. GM licenses the name and specifications to companies that manufacture the fluid and sell it under their own brand names. The name was first registered as a trademark and later evolved into a brand of GM. To see MatWeb's complete data sheet for this material ( including material property data, metal compositions, material suppliers, etc), please click the button below.Dexron is the trade name for a group of technical specifications for automatic transmission fluid (ATF) created by General Motors (GM). This page displays only the text of a material data sheet. Kinematic Viscosity at 100☌ (212☏), ASTM D445.Kinematic Viscosity at 40☌ (104☏), ASTM D445.Viscosity Measurement, ASTM D2270, Viscosity Index.It is also recommended for transmissions, power steering systems, and hydraulic systems requiring a DEXRON-III, Allison C4 or Caterpillar TO-2 fluid.Ĭhevron Automatic Transmission Fluid DEXRON-III/MERCON is also used as a light oil in compressors, pumps, and hydraulic systems. It is suitable for use in Mercedes Benz passenger car automatic transmissions and Voith and ZF truck transmissions. It is an excellent choice in any transmission where the manufacturer recommends a DEXRON or MERCON qualified product. ATFs that meet DEXRON-III requirements usually meet the MERCON requirements as well.Ĭhevron ATF DEXRON®-II/MERCON® is DEXRON®-III and MERCON® approved and is formulated with special base oil for exceptional protection from heat, oxidation and wear.Ĭhevron Automatic Transmission Fluid DEXRONIII/MERCON is designed for use in General Motors Corporation transmissions that specify a DEXRON-!!!, DEXRON-II fo DEXRON-IIE fluid and Ford Motor company transmissions that require a MERCON fluid. Most Ford vehicles manufactured between 19 specify a MERCON ATF. DEXRON-III can be used in transmissions that call for DEXRON-IIE or DEXRON-II. ChevronTexaco DEXRON®-III/MERCON® Automatic Transmission FluidĭEXRON® is a specification for General Motors vehicles, but many foreign manufactures specify a DEXRON approved ATF as well.
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