All the vegetal oils have 3 enemies: the light, the oxygen and the heat. That’s why you have to store it in a tight-closed volumes and far away from the source of warmth and light, because of them the oil lose its numerous abilities. Optimal preserving temperature is from +8C to +20C. The sunflower oil should be protected from the contact with the wated and metals. The nonrefined one, so called- the homemade oil, is necessary to store in a dark, cold place, for instance, in a fridge. Nonrefined oil is stored for 4 months, the refined one for 6 months. Some housewives fill the oil with salt and put there some dried beans for better preserving.