I have two of these and use them on both of my tanks to gas and diesel on a 13 gpm Fill-Rite pump. I live in an area where we to get H2O in our fuel. These filter system save me a lot of headaches on all of my equipment and Boilers. Using the water blocker filter is the way to go. If any water reaches the filter nothing will go through. Recommend stripping the bottom of your tanks once every three months. With this system you should have no more issues of Water getting to your injectors. I would also recommend putting anti-seize on the threads of the bowl to keep it seizing up in the head.