The WD40 company are notoriously tight lipped about the recipe, but spectrographic analysis shows its actually hydrotreated heavy naptha, petroleum base oils, petroleum naphtha, various grades of trimethyl benzene, xylene, mixed isomers, and 2–4% carbon dioxide propellant.WD40 is water dispersant recipe number 40
Mostly wax in solvent with small amount of oil.
History - WD-40 Company
The company that was founded on a blue and yellow can with a little red topwww.wd40company.com