![]() For a time, these fluids sufficed for most of the automatic transmission market. Type A was followed by ATF offerings from Ford and Chrysler in the ensuing decades. General Motors answered the call first in 1949 with Type A transmission fluid. Last update on / Affiliate links / Images from Amazon Product Advertising API HistoryĮarly automatic transmissions used simple motor oil as a lubricant, but as the systems became more complicated, producing ever more heat, a specialty lubricant was required. Mineral oil drain intervals are shorter than those of synthetics.No synthetic available that covers as many vehicles as the competition.High-mileage version has extra seal conditioners to renew these components.Additive packages provide excellent thermal protection.Costs much less than the one-size-fits-all competition.Formulations available that meet most OEM requirements.Choosing Transmax may force car owners to do a bit more homework, but the savings may just be worth it. Transmax Import Multi-Vehicle, for example, is suitable for most Japanese cars, but it also meets ATF+3, Dexron III and Mercon V specs for older American vehicles. There is a Transmax ATF for nearly every application. It is an affordable alternative to pricier synthetics, but Castrol Transmax offers performance to rival any other ATF. Not suitable for continuously variable transmissions (CVT) or dual-clutch transmissionsĬastrol uses a Group III base oil for Transmax full synthetic ATF, but most of its other Transmax transmission fluids are mineral-oil based.Fully synthetic base oils offer better thermal properties than conventional oils.Works for most European cars including Audi, BMW, Mercedes-Benz and Saab.Dexron VI, Mercon V and Mercon LV compatible.Meets or exceeds more manufacturers’ specs than any on this list.It also includes cleaning agents to clean off any deposits from friction-prone components, though its other additives discourage the deposits as well. Rather than simply being compatible with transmission seals, MaxLife’s additives include an agent that conditions seals to prevent leaks. Because it is synthetic, MaxLife has an extended drain interval. Its additive package is so refined that Valvoline MaxLife is suitable for nearly every modern automatic transmission application - ATF+4 and CVTs excepted. Valvoline uses Group III paraffinic oil as the base for its MaxLife synthetic ATF. One of the more expensive ATFs on this list.Promotes quiet shifting and cooler transmission temperatures.Extremely stable Group III base stock with Group IV additives.Meets or Exceeds Japan’s JASO-1A requirements.Meets many different manufacturers’ specs, including Dexron III, Mercon V, Allison C-4, Volvo 9731 and MAN 339 V1.It is also naturally stable at high temperatures, though it contributes to cooler overall transmission operation. However, it does not conform to GM’s newer Dexron VI requirements.īeing a fully synthetic fluid, Mobil 1 Synthetic ATF has remarkable cold-temperature flow and a high viscosity index of 176. ![]() Mobil 1 Synthetic ATF meets the requirements of several different manufacturers, including GM’s Dexron III and Ford’s Mercon V specs. ![]() Last update on / Affiliate links / Images from Amazon Product Advertising API What are the best automatic transmission fluids? 1.
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