Kroil oil is a penetrating and lubricating oil produced by Kano Laboratories that is designed for breaking bonds in metal on a molecular level. Kroil oil is used to loosen frozen metal parts and separate metals that bonded due to corrosion and contamination.
Kroil oil is commonly used in automotive engine work to loosen and clean nuts and bolts that have eroded over time. Kroil oil is also commonly used in gun cleaning to loosen screws, dissolve grease and oil and lift copper fouling. Kroil oil is available in regular liquid oil and aerosol form and contains no ozone depleting compounds.