Rislone Ring Seal Smoke Repair helps to stop exhaust smoke, reduce oil burning and prevent plug fouling caused by blow-by. The solution contains viscosity improvers that thicken the oil film in between engine parts to fill gaps. High-shear polymers provide a seal for worn pistons and rings to stop blow-by. Ring Seal Smoke Repair also cushions and coats engine parts to quiet noisy lifters and reduce wear.