21829 Febi Gear Oil

The Gear Oil from Febi (MPN: 21829) is sourced from Germany and has supplier-listed dimensions of 228 x 222 x 395 mm. It is typically used within the Service Parts > Regular Service > Transmission Oil category of automotive replacement parts. Dimensions are provided by the supplier and may include packaging dimensions. Transmission oil, also known as automatic transmission fluid (ATF), is a specialized lubricant engineered for use within the sealed environment of automatic and some manual transmissions. Its primary function is to transmit hydraulic pressure to engage gears and clutches, while simultaneously lubricating moving parts to minimize wear. Modern formulations incorporate viscosity index improvers, friction modifiers, and detergents to maintain consistent performance across operating temperatures and prevent deposit formation. Specific ATF types are designated by manufacturer standards (e.g., Dexron, Mercon, ATF+4) dictating compatibility and performance characteristics. Synthetic and mineral oil-based formulations are available, varying in thermal stability and service life.