The Luber-finer Time Release Technology (TRT) oil filter provides fleets with a reliable frontline defense against the hazards of oil degradation. Luber-finer TRT oil filters provide a controlled release of a specially formulated, highly concentrated liquid additive into the oil supply, helping the oil maintain its quality longer. The Luber-finer TRT oil filter ensures appropriate additive volume based on the quality of the oil base. The TRT oil filter can extend oil drain intervals, fight corrosive acid levels and increase fleet profitability.