... deeply oxides, free carbon, colloid, asphalt and wax from oil, to make black engine oil become transparent golden color. The final ... safely, prolonging the engine and engine oil lifetime. 2. To add special chemicals to eliminate oil-ion’s charge polarity, collecting oil-ions ... compounds. 3. Combined with air filter and vacuum degassing, dewatering to remove the odor and water. 4. The Vacuum degassing, ...