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2. Automatic transmission fluid - Wikipedia

   en.wikipedia.org/wiki/Automatic_transmission_fluid

   Automatic transmission fluid. Automatic transmission fluid (ATF) is a specialized hydraulic fluid that is essential for the proper functioning of vehicles equipped with automatic transmissions. Usually, it is coloured red or green to differentiate it from motor oil and other fluids in the vehicle.

3. Transmission (mechanical device) - Wikipedia

   en.wikipedia.org/wiki/Transmission_(mechanical...

   A transmission (also called a gearbox) is a mechanical device which uses a gear set —two or more gears working together—to change the speed or direction of rotation in a machine. [1] [2] Many transmissions have multiple gear ratios, but there are also transmissions that use a single fixed-gear ratio. Most currently-produced passenger cars ...

4. Fluid coupling - Wikipedia

   en.wikipedia.org/wiki/Fluid_coupling

   Fluid coupling. Daimler car fluid flywheel of the 1930s. A fluid coupling or hydraulic coupling is a hydrodynamic or 'hydrokinetic' device used to transmit rotating mechanical power. [1] It has been used in automobile transmissions as an alternative to a mechanical clutch.

5. Automatic transmission - Wikipedia

   en.wikipedia.org/wiki/Automatic_transmission

   Cutaway view of a 2007 Toyota AA80E hydraulic automatic Typical gear selector for an automatic transmission. An automatic transmission (sometimes abbreviated AT) is a multi-speed transmission used in motor vehicles that does not require any input from the driver to change forward gears under normal driving conditions.

6. Fluid Drive - Wikipedia

   en.wikipedia.org/wiki/Fluid_Drive

   Fluid Drive is the trademarked name that Chrysler Corporation assigned to a transmission driveline combination which replaced the flywheel with a hydraulic coupling and performed the same function as a modern torque converter, only without torque multiplication. A conventional clutch and three- or four-speed manual transmission was installed ...

7. DEXRON - Wikipedia

   en.wikipedia.org/wiki/DEXRON

   The Hydra-Matic Drive used a specialized lubricant called GM Transmission Fluid No. 1. By using the term "fluid" rather than "oil," they hoped to discourage the previously accepted practice of using SAE 20 engine oil. This fluid was composed of a Group 1 base oil and additives to reduce oxidation, foaming, rust, corrosion, varnish, and sludge ...