Bright Stock Refined, high viscosity lubricating oil usually made from residual stocks by suitable treatment, such asa combination of acid treatment or solvent extraction with dewaxing or clay finishing.

• 光亮油通常由渣油经加工处理而制成的精炼、高粘度微个个润滑油。加工处理的方式包括：酸处理(或溶剂萃取)与脱蜡(或粘土精制)相结合。