There's enough room to pour quarts into a short funnel set in the filler tube. Any larger container and plan to rig up some other tube to feed from outside the engine bay. Cut off the top of a wide mouth plastic bottle as the funnel works great for quick dumping of the quarts.
Lever drain valves like the
Fumoto F-106N helps reduce making a mess. Attach flexible tube to control draining directly into quart or gallon containers for disposal.