All purpose penetrating oil [ ; automotive engine oils; cutting oil for industrial metal working; cutting oils; diesel oil; engine oils; gear oils; gun barrel oil; hardened oils; heat transfer oils; heavy oils; hydraulic oils; industrial oils; lubricating oil for motor vehicle engines; lubricating oils; lubricating oils and greases; lubricating oils for sewing machines; mineral lubricating oils; mineral oil for use in the manufacture of metal cutting fluids; mineral oils and greases for indus...