DSL-5® Diesel Fuel Additive

Cleans pipes and injectors
Removes water
Reduces consumption
Ensures lubrication
Increases power
Reduces emissions

Many diesel engine service problems are associated with poor fuel quality and fuel impurities. These conditions can result in the buildup of a large amount of insolubles and water contamination. The result is low-temperature fuel gelling and icing, premature filter and injector plugging, harmful engine deposits and overall inferior performance. To cope with these problems, Energy Additives initiated a program to develop an ashless fuel additive that would inhibit fuel pollutants and provide premium fuel performance from diesel fuel. The result was a new additive/treatment, DSL-5®, proven in tests over years period in a variety of fleets in heavy-duty operations.

Features Advantages Benefits
Improve combustion Reduces fuel consumption Lower fuel costs
Clean deposits and prevents others More power Lower maintenance costs
Cleans injectors Reduce car maintenance A more powerful machine, more efficient
Lubricates upper cylinders, fuel pumps, and fuel injectors Reduce emissions Prevent air pollution
Protects fuel seals preventing leaks

Improves cold weather performance

Extend engine life and components „Peace of mind”
Remove water Operation of the engine in correct parameters
Reduces exhaust smoke


Cold flow improver 
DSL-5®’s cold flow improver reduces the pour point of diesel fuel and increases pumpability and filterability at low temperatures. Engines start, run, and operate efficiently in much colder environments than normally possible. The improver contains an ashless, organic material that will burn with the fuel and is not detrimental to the combustion process.

Water control agent 
Blended into DSL-5® is a water control agent that helps remove moisture from fuel tanks, lines, and bulk storage tanks. Water droplets are broken down into minuscule particles that disperse into the fuel and are removed during combustion. Cold-weather icing is eliminated and rusting prevented. Removal of free-standing water also stops micro-organism growth, which forms a sludge-like material that can plug filters and injectors.

DSL-5®’s highly efficient dispersing agent breaks down fuel-related sludge and oxidation residues into particles less than a micrometer in diameter. These pass through the filtration and injector systems without causing any plugging problems.

DSL-5® contains a powerful but safe detergent to help get rid of fuel-related deposits such as gum, varnishes and carbon residues. Regular use of the additive treatment removes and inhibits build-up of deposits in the combustion chamber, ring grooves, valves and other engine parts. Operating efficiency is increased, engine life prolonged, and fuel consumption decreased.

Icing and gelling 
DSL-5®’s cold flow improver and the water control agent will help control low-temperature icing and gelling when used as instructed on a regular basis. Prevent winter problems before they start with consistent DSL-5® fuel treatment.

Exhaust smoke 
Diminish the black smoke from unburned fuel. DSL-5® makes the diesel fuel burn more completely. Save fuel and avoid environmental complaints.

The need for DSL-5®

Fuel Seal Leaks Use of high aromatic fuel resulted in a swelling of nitrile O-ring seals due to permeation of the seal by the aromatics. Use of low aromatic fuel causes a reversal of the permeation drawing the aromatics out of the seal material.  This causes the seals to shrink, crack, and then to leak or fail.  When new seals are installed, the paraffins in the low aromatic fuel tend to leach the plasticizers out of the seals. Over a period of time this causes them to shrink and than leak.

Poor Cold Weather Performance Our lab testing has shown that this may be the biggest problem of all. The paraffinic content of the low sulfur/low aromatic fuel will have significant effect on both the cold flow and the cold filter plugging characteristics of the fuel.

How does DSL-5®  improve?

The compounds and ingredients in DSL-5® will improve reduced lubricity, fuel seal leaks, and poor cold weather performance.

DSL high quality lubricant will more than replace the loss of sulfur lubrication.  DSL will prevent the aromatics from permeating the seals and prevents the leaching of the plasticizers from the seals by the paraffins in the new fuel.

DSL has been used in extremely cold (Alaska) & hot (Arabian Desert) climates for many years with no problems.