Diesel Fuel Filtration 101 Diesel engines are used in all sorts of industries due to their efficiency, cleaner exhaust and better reliability in extreme temperatures. But they can fall victim to contaminants including dirt, water and bacteria. Here's what you need to know about contamination in diesel fuel and how to filter contaminants out for better efficiency. Diesel Fuel Filtration Specialists Welcome to Diesel Fuel Filtration Specialists. IT IS IMPORTANT TO KEEP YOUR FUEL AT ITS HIGHEST AND BEST CONDITION. FILTERING IS THE KEY-CALL TODAY!