Profile: Motor Oil, Inc. supplies industrial lubricants and metalworking fluids. Our products include straight oils, soluble oils, coolants and machine lubricants. Our SuperKut dark cutting oil is a sulfur-based cutting oil that is designed for ferrous metals and is suitable for use in a wide range of operations including threading, tapping, broaching, automatic screw machines, lathes & gear cutting. Our KleerKut lard oil is a light colored, non-staining blend of mineral oil and lard oil that is recommended for machining & grinding both ferrous & non-ferrous metals.