Disc Type Oil Skimmer- In a Disc Type Skimmer a stainless steel disc is rotated continuously with the help of geared drive. Wheel skimmers pass a coated disc or wheel through the contaminated liquid. The disc or wheel picks up the oil, which is then skimmed off outside the tank. This could be used for small tanks. For Coolant, Light oils, jet fuel, gasoline, diesel, light crude, no.2 fuel oil