The success of oil splash lubrication is closely depending on the speed from the gears. A standard guideline is always that a tangential speed of at least three m/s is required to ensure that splash lubrication for being effective. This treatment is appropriate for use in all kinds of differentials https://gunnerbwmfu.ampedpages.com/the-5-second-trick-for-gearbox-oil-treatment-61094257