Change your oil through the dipstick tube and pump most any other fluid! For all types of motors, watercraft and vehicles. Use a fluid extractor for oil changes and the removal of fuel, coolant and transmission fluid. Use it to pump out bilge water and trapped fluids. Perfect for any situation where draining is difficult. Self-priming pumps create a powerful vacuum to remove almost any non-corrosive liquid. It’s an easier, cleaner way to drain engines with hard-to-reach drain plugs.