GB GERION® EXTRA 75W-90 FS is a top tier synthetic automotive gear oil, developed using the highest quality synthetic base oils and advanced additive systems as a Total Driveline Lubricant (TDL), for use in both synchromesh manual transmissions and axles. It has been designed to withstand the most severe conditions imposed by commercial vehicle operations and provides total reliability at all times. GB GERION® EXTRA 75W-90 FS provides improved fuel economy and higher levels of long-term wear protection over extended drain periods. The use of a single lubricant for synchromesh gearboxes and final drives allows product rationalisation, resulting in cost savings and reduced risk of mis-application.