The solubility of oil in acetic acid depends on several factors such as the temperature, pressure, and the specific type of oil and acetic acid. Generally, oils are not very soluble in acetic acid. For example, the solubility of vegetable oils such as soybean oil or olive oil in acetic acid at room temperature is very low, typically less than 1%. However, the solubility of oils can increase with increasing temperature and pressure. For instance, at higher temperatures and pressures, the solubility of some oils in acetic acid can reach up to a few percent. Additionally, the solubility may also be influenced by the presence of other substances or impurities in the oil or acetic acid.