The details of the siphon are as follows: The tank is filled with oil (sg equals 0.86) with a vent at the top. The siphon tube (50 mm O D times 1.5 mm wall) is vertical on the right side of the tank and is labeled as A at the oil surface level. The tube goes up and then turns right where it is labeled as B. the tube then turns down where it is labeled as C. from C, the tube turns right and here it is labeled as D. The oil flowing out from the tube D has a diameter of 25 mm