CA AB493

Expands the definition of "rerefined oil" to include lubricant base stock or oil blend stock products derived from waste oil that is compatible for refining as a blend component for lubricant oil and other recycled oil content containing products.

Defines "waste oil" to include contaminated oils or waste streams not classified as "used oil" under existing law, including items currently excluded from the used oil definition.

Relaxes processing requirements for rerefined oil by removing the mandatory requirement for solvent refining or hydrotreating, requiring only vacuum distillation at minimum.

Allows rerefined oil blend stock to be sold as a blend component meeting applicable standards rather than requiring certification under the ASTM D6074-99 standard alone.

Specifies that no state reimbursement is required for local agency or school district costs related to this act, as it only changes the definition of an existing crime.