Bad tank inlet leak. What a mess! We found that the motor mount plate was misaligned. Apparently this caused the gasket to shift and leaked the dirty oil all over the outside of the tank. We were warming up the 1st engine to drain the oil from my Sea Ray when something went wrong with this extractor. It also (aside from flowing quite heavily) extracted very little oil. Each engine holds about 7 liters. I had to run to West Marine and spend another $144 to complete the job. It's quite frustrating that this Jabsco oil extractor gelled catastrophically right out of the box.