This is a full synthetic Automatic Transmission Fluid that contains a very low viscosity and high viscosity index. This product has been specifically developed for the Mercedes Benz 9 speed automatic transmissions. This product ensures significant fuel saving properties and is applicable in automatic transmissions where the MB 236.17 specification is prescribed. This product can be used in the newest 9G tronic automatic transmissions of the series W9A 700 / NAG3 types. This product is backwards compatible with MB 236.16.