We added to the original Marvel Mystery Oil to create a specially formulated tool oil for use in all piston type and rotary air tools as well as in-line air lubricators. Enhance your tools performance and longevity with Marvel Air Tool Oil. Marvel Air Tool Oil prevents rust formation in air tools while providing positive lubrication for smoother starting longer lasting tools. Marvel Air Tool Oil assures the maximum performance of your tools by dissolving gum and sludge that reduce a tool s speed and power. Compatible with all types of air powered tools.