Did you know that most fuel tanks have water in them? Water accumulates in a fuel system in several ways including condensation and contaminated storage tanks. It can also be drawn from the atmosphere during fueling.


Most people do not consider water to be a problem except during the winter months.  This is incorrect thinking. Water causes problems all year long and the damage it brings about during the course of the year can be far worse than what little damage is done by winter freeze up.  Water can score or split your injectors  because it does not compress going through your injectors like fuel does.  Water also has no lubricating ability and washes away existing lubrication.


In diesel and gasoline water promotes the growth of Microbes which contaminates your system further with sludge and slime. Algae can also secrete acid that will destroy your entire fuel system. In diesel fuel waters aids in the formation of sulfuric acid. For water and microbial testing see, our line of fuel testing equipment and our Fuel Tools page. We have everything you need to sample your tanks, fuel and filters.


When fuel is refined all water is removed. However in transporting fuel through the pipeline or from one tank to another, water accumulates.  Fall and spring are the worst time for water build up with the warm days and cold nights causing fuel tanks to sweat. Many diesels are also using fuel heaters for winter operation. Although heaters do help when running in the extreme cold, they can create a lot of condensation as well as carbon build up and poor ignition.  When water remains in your tank it will rust, corrode and create a slimy build up that will cause filter plugging and premature fuel system failure. 


Many products on the market today use an alcohol base and claim to remove water from the fuel. While this is true, they may not remove the water from your tank. Alcohol combines with the water and allows it to settle to the bottom of the tank where it remains. (See  Previous information, Alcohol’s & Solvents page 9)   While driving, agitation can put large drops of water and alcohol in suspension long enough for them to be drawn into your fuel lines. This can cause thousands of dollars in damage. Water is a problem that needs to be addressed during the entire year,  not just in the winter months. 

Controlling Water In Your Fuel


Most additives displace the water to the bottom of your tank, but PFS fuel treatments adhere to the water and break it up into tiny droplets, while simultaneously lubricating the fuel system. It then holds it in suspension and disperses it safely  a droplet at a time,  and lubricates simultaneously. These droplets are small enough that they will not harm your fuel system, including injectors and pumps. PFS removes water continuously keeping your fuel free of this contaminant. By removing the water in your diesel fuel you are additionally removing the oxygen supply that algae needs to grow reducing the chances of sulfuric acid forming.  Be sure to fill your equipment before it is going to sit idle, even if it is just overnight. This goes a long way in preventing condensation. For those who have storage tanks make sure you keep all openings tightly shut with the exception of the vent. The vent should not be obstructed in any way but it should also be hooded to keep out the rain.


PFS fuel treatments contain deicer and a rust inhibitor that prevents rust in your fuel system. There is no need to add more PFS during the winter months, by using PFS regularly during the year you have removed the threat of winter freeze up with rare exception.  PFS is not designed to thaw out a frozen fuel lines but the deicer will combine with water and stop if from freezing.  Using PFS every time you fuel is intended to keep you from freezing in the first place.