Torco® – SR-1 100% Synthetic Motor Oil 100% Synthetic Formulas Generation-2 MPZ® frictional loss technology Thermally stable under severe temperatures Increases horsepower & torque Related posts: Royal Purple® – HPS™ High Performance Street Synthetic Motor Oil Torco® – SR-1R 100% Synthetic Racing Motor Oil Torco® – SR-5 100% Synthetic GDL Racing Motor Oil Torco® – SR-5R 100% Synthetic Racing Motor Oil Posted In: Replacement Engine PartsTagged In: Torco