Changing the motor oil of an Aprilia Dorsoduro 750 is an operation that requires attention and precision to ensure the correct functioning of the engine. First of all, it is important to make sure that the motorcycle is on a flat and stable surface, preferably using a center stand or suitable support. The engine should be slightly warm to allow the oil to flow better, so start it for a few minutes and then turn it off. Locate the oil drain plug located at the bottom of the engine and place a container to collect the old oil. Unscrew the plug using a suitable wrench and let the oil drain completely. In the meantime, remove the filler cap to facilitate the flow. Once drained, replace the gasket of the drain plug if necessary, then tighten it securely. Proceed by pouring the new oil using a funnel to avoid spills, making sure to respect the quantity and specification indicated in the motorcycle manual. After completing the filling, start the engine for a few minutes and check the level with the appropriate dipstick or indicator. Adjust if necessary and dispose of the used oil following local regulations.