A system for treating food products with oil, comprising - a container for oil which container is provided with a bottom, - a conveying device for conveying food products to be treated through oil in the container in a conveying direction, the conveying device comprising an endless conveyor belt which is wound around deflector rollers (119a, 119b) which are provided at opposite ends of the system to allow the food products to be situated on a carrying run of the conveyor belt, - a supply device (109, 131, 105a, 105b, 105c) for supplying oil to the container, - a discharge device (109, 107a, 107b, 107c) for discharging oil from the container, - a heating device for heating the oil, the supply device (109, 131, 105a, 105b, 105c) comprising - at least two supply bodies which, viewed in the conveying direction, are provided at some distance apart, each supply body comprising - an elongate collection space (151; 251) for the oil in which the longitudinal direction of the collection space extends transversely to the conveying direction, and - at least two supply ducts (111; 211) in which each supply duct, on a respective upstream side thereof, adjoins the collection space (151; 251) and, on a respective downstream side thereof, ends in the bottom of the container via an outlet opening (153; 253) of the respective supply duct, - a pump for supplying oil heated by the heating device to the collection space (151; 251), and - a metering device (112b, 112c; 212) for metering the amount of oil which is supplied to the outlet openings (153; 253), wherein the metering device (112b, 112c; 212) has a passage opening for each supply duct (111; 211) which is provided between the respective supply duct (111; 211) and the collection space (151; 251), via which passage opening oil can flow from the collection space (151; 251) into the supply ducts, and wherein the size of each passage opening is adjustable. - a container for oil which container is provided with a bottom, - a conveying device for conveying food products to be treated through oil in the container in a conveying direction, the conveying device comprising an endless conveyor belt which is wound around deflector rollers (119a, 119b) which are provided at opposite ends of the system to allow the food products to be situated on a carrying run of the conveyor belt, - a supply device (109, 131, 105a, 105b, 105c) for supplying oil to the container, - a discharge device (109, 107a, 107b, 107c) for discharging oil from the container, - a heating device for heating the oil, the supply device (109, 131, 105a, 105b, 105c) comprising - at least two supply bodies which, viewed in the conveying direction, are provided at some distance apart, each supply body comprising - an elongate collection space (151; 251) for the oil in which the longitudinal direction of the collection space extends transversely to the conveying direction, and - at least two supply ducts (111; 211) in which each supply duct, on a respective upstream side thereof, adjoins the collection space (151; 251) and, on a respective downstream side thereof, ends in the bottom of the container via an outlet opening (153; 253) of the respective supply duct, - an elongate collection space (151; 251) for the oil in which the longitudinal direction of the collection space extends transversely to the conveying direction, and - at least two supply ducts (111; 211) in which each supply duct, on a respective upstream side thereof, adjoins the collection space (151; 251) and, on a respective downstream side thereof, ends in the bottom of the container via an outlet opening (153; 253) of the respective supply duct, - a pump for supplying oil heated by the heating device to the collection space (151; 251), and - a metering device (112b, 112c; 212) for metering the amount of oil which is supplied to the outlet openings (153; 253),