Abstract: An improved oil toilet for use with an oil-based flushing fluid including a commode having a bowl portion of the wash-down type having a generally concave inner surface and a flushing manifold at the top thereof. The inner surface is in fluid communication with a trapway having a trap seal therein leading to a discharge outlet. Overflow means are provided intergral with the inner surface for returning overflow from the bowl portion back into the dishcarge outlet. A trap seal is associated with the overflow means for sealing off odors from the discharge outlet. Fluid communication is provided between the trap seal in the overflow means and the manifold for replenishing the oil in the trap of the trap seal in the overflow means.