Amsoil'sSignature Series Synthetic Automatic Transmission Fluids (Multi-Vehicle Synthetic Automatic Transmission Fluid and Fuel-Efficient Synthetic Automatic Transmission Fluid) offer robust performance and can be used twice the vehicle manufacturers' severe-service drain interval. Signature Series ATF provides high and low temperature performance and oxidation stability. In addition, AMSOIL Synthetic ATF is formulated to improve fuel efficiency, reduce transmission temperatures and increase equipment life.