believe it or not but this gearbox when operating slow will run great on brake fluid. Simply lay underneath and open the transmission drain plug 19m and empty the fluid.
Turn vehicle upside down and refill with an equal amount to what came out, then refill the gearbox with the brake/hydrolic clutch fluid. (There is a filler for the transmission under the bonnet on some models, normally on top of gearbox. It is filter less by the way)
Ted
newbury 4x4 centre, November 2008