There are 2 most important different types of transmissions: automated and handbook. Computerized transmissions use fluid couplings as an alternative to a clutch, and they typically have a lot more gears than handbook transmissions. The transmission filter allows to get rid of Dust and contaminants from the automatic transmission fluid, https://edwinaaxvt.blogdomago.com/32994123/not-known-factual-statements-about-filter-gearbox