Pre heat the N-Terpinal to 175 to 195 degrees F. in a Stainless Steel Tank, place parts into the solution and cover the tank to reduce evaporation. Allow parts to soak for approx. 45 minutes open cover and allow to vent, remove one part to inspect if not completely cleaned return part to tank for an additional 30 minutes. After removing parts place into cold water rinse. If parts have blind openings, holes, or fine details a pressure washer would be recommended to rinse of the parts.