I am beginning process of changing out my VRO2 pump. I removed my remote outboard oil tank and emptied it. There is a small amount of debris in the bottom of the tank. I want to clear it and the oil line before running the motor with the new pump (as it?s a high dollar item). What do I use to flush the tank? I got the new filter and a new fuel filter I just don?t know what to use as far as the cleaning agent to clean the inside the tank and oil line.