About Clean Diesel

Call us today for a chat about your fuel problem: 02 9972 9938

As you wouldn't eat bad food, you shouldn't feed your marine engine bad diesel! Bad diesel is one of the major causes of premature engine failure. A truck engine that runs on dry and clean diesel lasts in average 12.500 hours in comparison to a recreational diesel marine engine that averages 2500 hours. That is 5 times more and most it is attributed to the quality of your diesel. Get your diesel quality checked regularly and extend the life of your engine.

Clean diesel in your boat should be free of contaminants such as suspended particles, microbial growth and water. Water is the worse of all as it is usually the cause of the two first ones. Water causes damage to fuel tanks, fuel system components and engine. One way or another, especially on boats sitting on the water, the water will find its way in your boat's tank either by refueling with water contaminated fuel, condensation, leakage, ingress from atmosphere (humidity) and sometimes human error. Due to the nature of marine diesel tanks, the fuel is constantly agitated and that increase the rate of emulsified water percentage, water that will not drop at the bottom to be drained or removed with water absorbent products. Emulsified water can be removed by using a de-emulsifier diesel agent that will allow the water to separate from fuel and drop to the bottom of the tank where from can be drained using conventional methods. If your fuel tank is not fitted with a water drain you can retrofit one, see our DIESEL TANK ACCESS PLATES page for more details.

220X150 DUAL

The biocides and fuel additives will not work effectively if your tank is contaminated with sludge internally on the walls and bottom. The surface layer of dead cells (top of the sludge) acts as a protection for the microbial growth that takes place beneath. With constant agitation of the diesel tank of a boat, some of the sludge becomes dislocated and can block your filters causing the engine to stop.  

Also the new diesel USLD (Ultra Low Sulfur Diesel) while it is good for the environment it causes more problems to the engines and fuel system due to increased rate of microbial contamination compared to old diesel. Main reason is that sulfur is a natural poison to bacteria and fungus and with an increased paraffin content combined with a decrease of sulf, the microbial contamination has further exacerbated in ULSD. The problem gets worse when biodiesel is added to ULSD and according to Australian Standard of fuel quality it can be up to 5%. The reason is that compared to regular diesel biodiesel is much more hygroscopic (attracts water). Studies found that biodiesel can absorb up to 25 more water than diesel and as the temperature increases above 35°C biodiesel has an increased rate of 22.2ppm/°C - 9 times more than regular dieseel. That is the reason why the tanks situated in the engine room or in higher temperature areas have the worse microbial contamination that can be up to few centimeters in thickness on the bottom of the tank. When that happens the primary fuel filters become constantly clogged not lasting more than few hours at a time.

While there is NO WAY to prevent water entering your fuel tank, we at Clean Diesel, have many solutions to stop the damage and keep your marine engine in good condition.  


Diesel fuel contamination

Diesel contamination, its effects on engine performance and operation have been studied and researched countless times since the introduction of the first diesel engine in the 1890s by Rudolf Diesel.

In early 2000s, DOW Chemical Company, second largest chemical company in the world, conducted a study about microbial contamination of diesel fuel, its impact, causes and prevention. It is the most comprehensive technical article that will explain in detail everything there is to know about diesel contamination. After analyzing all aspects of diesel microbial contamination the study concludes:

"Despite growing evidence of the significant adverse economic impact of microbial contamination on diesel and gas turbine engine operations, only a few operators treat their fuel with biocides. One reason for this is the subtle nature of microbial contamination, which goes undetected until catastrophic failure takes place. Fuel performance, system integrity, filter life and engine life can be degraded significantly by the direct and indirect effects of microbial activity. Consequently, treatment with a fuel preservative can have a positive economic impact on bottom-line operational costs."

Read the full article HERE

To effectively remove the contamination from the diesel fuel we have developed our own equippment and technology that uses a either VACUPOWER, ULTRASONIC or CHEMICAL SLUDGE DISLOCATION from the bottom and walls of the tank, MECHANICAL FILTRATION for water removal (both free water and emulsified/suspended) paricles up to 2 micron (smaller micron ratings available upon request) combined with scientifically proven ULTRASONIC CELL DISRUPTION and UV LIGHT exposure with proprietary wavelength modulation that will kill any submicron microbial contamination. 



IMPORTANT: We recommend that after every diesel tank cleaning/diesel fuel polishing procedure you replace primary and secondary filters on your boat to ensure a 100% clean fuel system.

For more information or a quote call us on 02 9972 9938 or fill in the CONTACT FORM.