Cal. Business and Professions Code - BPC § 13460. Section 13460.
Engine oil shall not be sold or distributed for use in an internal combustion engine unless the product conforms to the following specifications:
(a)
It shall meet the engine oil requirements established by a minimum of one current API classification pursuant to the latest revision of the SAE International Standard SAE J183 for engine oil performance and engine service classification, or a minimum of one current sequence of the European Automobile Manufacturers Association (ACEA) “European Oil Specification.”
(b)
It shall be free from water and suspended matter when tested by means of centrifuge, in accordance with the standard test ASTM D-2273.
(c)
Any engine oil that is represented to meet SAE International SAE J183 engine oil performance and engine service classification SA must have either an acid number or base number of 0.20 mg of KOH/g as measured by ASTM International Standard Test Method D974 or equivalent.
(d)
Any engine oil represented as “resource conserving” shall meet the requirements established by the latest revision of the SAE International Recommended Practice SAE J-1423.