This is our new oil tank. We designed this tank especially for the T/F and NFB bikes of today. It has a total capacity of 4 quarts of oil plus a vapor space with internal baffling. The tank easily comes apart in the middle for cleaning and inspection. The tank is equipped with two - 10AN scavenge return ports, one - 10AN breather port, one - 10AN feed outlet port and one - 10AN vent port up top. A 6AN drain plug is located in the very bottom of the tank for draining.