CAN/CGSB-3.1010-93

1.1 This standard applies to the physical and chemical limits of re-refined base oils derived from various refining processes when recycling used oils to produce base oils for lubricants. Re-refining may include distillation, hydrotreating, and/or treatments employing acid, caustic, solvent, clay and/or other chemicals. (See also ASTM D 4175) 1.2 This standard applies only to base oils and not to formulated products. 1.3 Re-refined base oils to this standard are intended for use either alone or in combination with virgin base oils to formulate products including automotive and industrial lubricants.