Pentos in's Transmission Fluid Service Kit includes 5 liters of ATF1 Synthetic Fluid and a Rein transmission filter, gasket, and pan bolts - everything necessary for a transmission fluid service on select Volkswagen vehicles. Pentos in ATF1 is a fully synthetic, OE manufacturer approved, high performance Automatic Transmission Fluid (ATF), designed for lifetime use in automatic transmissions. Formulated with the finest commercially available synthetic oil base stocks and additive components, for the ultimate in transmission protection and performance. ATF1 features a high performance 'Shear Stable VI-Improver' along with modern antiwar chemistry and friction modifiers that guarantee sound, stable friction performance in modern automatic transmissions with an electronically controlled converter clutch. A Pentos in ATF1 fluid service is your vehicle's best defense against transmission damage due to high heat and fluid degradation. According to the Automatic Transmission Rebuilders Association, 90% of automatic transmission failures are caused by overheating and can be often blamed on transmission fluid that should have been replaced. Pentos in Automotive Fluids - From the First Fill to the Last. Pentos in fluids are engineered to meet the demanding standards and specifications established by many of the world's leading automobile manufacturers. All Pentos in technical fluids are backed by the CRP Automotive standard of excellence, which is reflected in our ISO 9001:2008 quality management system certification. Pentos in was founded in 1927 in Hamburg, Germany and is the leading innovator and supplier of synthetic and mineral oil-based fluids for the automotive industry. They are the OE supplier for many of the world's automotive automobile producers. They are also the leading developer for dual clutch transmission fluid. When it comes to quality, durability, and a brand you can trust, be sure to choose Pentos in when it comes to fluid need in your vehicle.