Ultradrive

The Ultradrive is an automatic transmission manufactured by Chrysler beginning in the 1989 model year. Initially produced in a single four-speed variant paired with the Mitsubishi (6G72) 3.0-liter engine in vehicles with transverse engines, application was expanded to the Chrysler 3.3- and 3.8-liter V6 engines in 1990 model year Dodge Caravan/Grand Caravan, Plymouth Voyager/Grand Voyager, Chrysler Town & Country, Dodge Dynasty and Chrysler New Yorker. A six-speed variant (62TE) was introduced in the 2007 model year and remains in production for several models as of 2019. The Ultradrive and succeeding transmissions are produced at the Kokomo Transmission plant in Kokomo, Indiana, which also manufactures other Chrysler automatic transmissions. As of 2020, Dodge Journeys equipped with four-cylinder engines are the only applications of the four-speed Ultradrive (40TES) remaining in production. The Ram Promaster will be the only vehicle to use an Ultradrive transmission after 2020. History The Ultradrive was a significant technological advancement in transmission operation, one of the first electronically controlled automatics. It pioneered many now-common features such as adaptive shifting, wherein the electronic control unit optimizes shifting based on the driving style of the operator. It earned a reputation for being unreliable. While the Ultradrive transmission had numerous issues, reportedly due to being rushed into production, a common problem was not necessarily caused by a design flaw, but by poor labelling: both owner's manuals and transmission fluid dipsticks advocated the use of Dexron transmission fluid in the event the required fluid was not available. The transmissions were designed to use a special fluid (Type 7176, also known as ATF+3, now superseded by ATF+4) and many owners reported failures from the use of Dexron, as well as temporary issues which were resolved when the proper fluid was added.