A Cub Cadet riding lawn mower takes either 10W30 or SAE30 oil. To find out what oil is right for a particular model, the manufacturer recommends looking in the owner's manual. This also tells an individual how much oil to use.
Like a car engine, the engine in a lawn mower can run much smoother and last longer if the oil is regularly changed. Cub Cadet recommends changing the oil in a riding mower after the first five hours of operation, as this helps to remove any initial contaminants. After that oil change, the manufacturer recommends changing the oil each 25 hours of operation, or once every season the mower is used.