It is not necessary to melt liquid oils prior to use. Simply pour the oil into the fryer slightly below the full mark before turning on the heat.
To insure proper fryer operation, it is very important to keep the oil quantity at the level specified by the manufacturer of the fryer. A deep fryer is designed to operate at maximum efficiency with a certain amount of oil. When the oil level is too low or too high, uneven frying and excessive browning may occur.