The usefulness of oil splash lubrication is greatly dependent on the speed in the gears. A standard rule of thumb is a tangential velocity of at least three m/s is needed to ensure that splash lubrication to be efficient. of lubricant is essential, and this is very essential with grease. https://gearboxoiltreatment81232.actoblog.com/34833226/how-much-you-need-to-expect-you-ll-pay-for-a-good-gearbox-oil-treatment