text: Cooking oil can be used on horse feed but it add calories and does not have an influence on how powerful the horse is.\nIt will make them gain weight and not make them hyper or hot.\nIt adds calories by adding fat to the diet. It is use with great success to get thin horses to gain weight with out the risk of lamanitis or founder. It works better than just adding more grain to the diet.\nIt will not change the power of the horse.\nThe oil must be a vegatable oil and needs to be clean and fresh.\nStart at 1/4 of a cup per feeding and work up to one cup.