Volvo 122 » Fluid Syringe for Manual Trans and Differentials

On cars with overdrive, it's a good idea to remove the pan gasket and clean the filters to get most of the fluid out.  After you fully drain and reassemble, simply draw the fluid out of the new fluid bottle and inject it into the filler hole.  It takes only a few squirts until the fluid reaches the fill hole.  Make sure you run the OD and recheck the level so you know that it's fille dproperly.