Automaattivaihteistoöljy

Automaattivaihteistoöljy, often referred to as ATF (Automatic Transmission Fluid), is a specialized hydraulic fluid used in vehicles with automatic transmissions. Its primary function is to transmit power from the engine to the transmission, lubricate moving parts, cool the transmission components, and provide hydraulic pressure for gear shifting. ATF is formulated with specific friction modifiers, anti-wear agents, and detergents to ensure smooth operation and longevity of the automatic gearbox.

The type of ATF required varies significantly between vehicle manufacturers and transmission models. Using the wrong type of ATF can lead to poor shifting performance, increased wear, and potentially severe transmission damage. It is crucial to consult the vehicle's owner's manual for the recommended ATF specification. Common ATF types include DEXRON, MERCON, and various proprietary formulations from different manufacturers.

Over time, ATF degrades due to heat, contamination, and shear forces. This degradation can result in reduced performance and increased wear on transmission components. Therefore, regular ATF changes are an essential part of vehicle maintenance. The recommended service interval for ATF changes varies depending on the vehicle and driving conditions, but is typically found in the owner's manual. Many modern vehicles have "lifetime" ATF, but even these can benefit from periodic inspection and potential replacement, especially under heavy use.