Never fill new filters with fuel before installation (you'll pour in dirt). Fuel-tank breathers stuffed with porous filtering media, or vented tank caps with no breathers, pull in lots of contaminants ...

The Racor Division of Parker Hannifin says its 7125R10 and 7125R30 Fuel Filter/Water Separators trap contaminants present in diesel fuel prior to reaching the fuel injection system, protecting against ...