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2. Automatic transmission fluid - Wikipedia

   en.wikipedia.org/wiki/Automatic_transmission_fluid

   Any automatic transmission fluid will last longer if the transmission case can be hermetically sealed, but transmissions typically have two potential entry points for air: The Dipstick Tube. Any transmission with a dipstick tube has the potential to let additional oxygen into the transmission through a dipstick that is not fully seated in the ...

3. Gear oil - Wikipedia

   en.wikipedia.org/wiki/Gear_oil

   Some modern automatic transaxles (integrated transmission and differential) do not use a heavy oil at all but lubricate with the lower viscosity hydraulic fluid, which is available at pressure within the automatic transmission. Gear oils account for about 20% of the lubricant market. [1]

4. Automated manual transmission - Wikipedia

   en.wikipedia.org/wiki/Automated_manual_transmission

   Automated manual transmissions can be semi-automatic or fully-automatic in operation. Several different systems to automate the clutch and/or shifting have been used over the years, but they will generally use one of the following methods of actuation for the clutch and/or shifting: hydraulic or electro-hydraulic actuation, [12] electro-mechanical, [13] pneumatic, [6] [14] [15] electromagnetic ...

5. Automatic transmission - Wikipedia

   en.wikipedia.org/wiki/Automatic_transmission

   A continuously variable transmission (CVT) can change seamlessly through a continuous (infinite) range of gear ratios, compared with other automatic transmissions that provide a limited number of gear ratios in fixed steps. The flexibility of a CVT with suitable control may allow the engine to operate at a constant angular velocity while the ...

6. Fluid Drive - Wikipedia

   en.wikipedia.org/wiki/Fluid_Drive

   The fluid drive fluid coupling was also used in conjunction with Chrysler's M6 Presto-Matic semi-automatic transmissions. The M6 was in reality a two-speed manual transmission with a conventional clutch mounted behind the same fluid coupling unit that was installed in straight Fluid Drive cars. The M4 Vacamatic had two forward speeds and reverse.

7. 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, direction of rotation, or torque multiplication/reduction in a machine. [1] [2] Transmissions can have a single fixed-gear ratio, multiple distinct gear ratios, or continuously variable ratios. Variable ...