Lubricants shall be applied to food-contact surfaces that require lubrication in a manner that does not contaminate food or food-contact surfaces. Equipment shall be reassembled after lubrication so that food contact surfaces are not contaminated. Only approved food grade lubricants shall be used for this purpose.
Source:
Section 114141, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=114141..