The filter is accessible through the rubber flap in the front of the metal pan, one side of the rubber is held in with the twist clips and opens right up to reach in and get the filter. There is also a built in drain tray which funnels the oil out to the front. Caution loosen the filter slowly and let it drain slowly, if you twist it off fast the tray will overflow and you have a real mess inside the pans! Other than that an oil change is fairly easy!