From the effective date of this section it shall be illegal for any franchisor by any action to require a franchisee to purchase only those tires, batteries, motor oil, and other automotive accessories sold by the franchisor. A franchised retail gasoline dealer may sell any tires, batteries, motor oil, and other automotive accessories as may be available to him or her for retail sale.
Source:
Section 21140.2, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC§ionNum=21140.2..