Zippo uses cotton pads. Zippo uses degreased cotton inside: Tear the cotton apart and remove visible impurities such as small stones and dead leaves. Wash the cotton with water until the outflow is clear. Place the cotton in an enamel pot, add water until it is just submerged, then add NaOH equivalent to 2% to 5% of the water weight. Cover and boil, then simmer for 10 minutes. Cool, rinse with plenty of water, scrubbing for about 10 minutes. Dry the washed cotton on clean paper. The function of Zippo cotton pads: Zippo cotton pads prevent oil leakage, but if too much oil is added beyond the cotton's absorption capacity, it will still seep out! Additionally, the English text on the cotton pad roughly indicates the oil filling area, and the small holes on the pad can also hold spare flints. First, choose genuine Zippo lighter fluid and keep away from fire sources. Before refueling, place waste newspaper or similar padding under the lighter to prevent oil from dripping onto the table. The appropriate amount of oil to add doesn't have an exact standard. Based on experience, add oil until the cotton appears moist, which is about 70% of the cotton's oil absorption capacity. If the lighter, which usually works well, starts having ignition issues, the first thing to consider is whether it needs refueling. However, sometimes to extend the time between refueling, people add more oil, which only leads to waste. When refueling, due to gravity, the oil settles at the top of the lighter (when the lighter is inverted, i.e., the windproof cap area). If the cotton appears moist with oil, it means too much has been added. Cotton has a saturation point for oil absorption. If the body is reassembled into the case, excess oil will leak from the bottom. Therefore, it's recommended to refuel frequently but in small amounts. After refueling, check the case and padding for any oil leakage and wipe it dry before testing the lighter.
