Diesel Bug Treatment: How V25 Helps Protect Your Marine Fuel System
Diesel bug is one of the most common fuel-related problems faced by boat owners, yacht crews and marine engineers. Left unmanaged, microbial contamination can contribute to sludge, blocked filters, poor engine performance and potentially costly fuel system problems.
Traditional diesel bug treatments often focus on killing microorganisms with a biocide. V25 Advanced Fuel Treatment takes a different approach, helping to manage the fuel environment and the contamination it leaves behind while supporting the condition and performance of the entire fuel system.
What Is Diesel Bug?
“Diesel bug” is the common name given to microorganisms, including bacteria, yeasts and fungi, that can develop where water and diesel fuel meet.
Water can enter a marine fuel tank through condensation, contaminated fuel or during bunkering. When conditions allow microbial growth to develop, contamination can build up at the fuel/water interface.
Over time, this can contribute to:
- Sludge and deposits in fuel tank
- Blocked or prematurely clogged fuel filters
- Contaminated fuel
- Injector deposits
- Reduced engine reliability
- Increased maintenance
- Poor combustion and smoke
- Fuel system corrosion
For vessels where fuel can remain onboard for extended periods, diesel bug and fuel degradation can become a particular concern.
How Does V25 Help With Diesel Bug?
V25 Advanced Fuel Treatment is not a conventional biocide.
Instead, its surfactant technology works throughout the fuel system to help manage water, disperse sludge and contamination, and improve the overall condition of the fuel.
Rather than simply killing microorganisms and potentially leaving dead biomass and sludge behind in the tank, V25 helps deal with the environment and contamination associated with diesel bug.
As the treated fuel moves through the system, V25 helps:
- Manage water within the fuel
- Disperse sludge and deposits
- Control the conditions associated with diesel bug
- Keep fuel systems and injectors cleaner
- Stabilise fuel
- Restore fuel lubricity
- Support improved combustion
- Reduce fuel related maintenance issues
This means V25 isn’t only a treatment for a dirty tank. It is designed to support the fuel from tank to engine.
What Happens to the Sludge?
One of the biggest problems following microbial contamination is the sludge and deposits that can accumulate in the bottom of a fuel tank.
V25 is designed to disperse this contamination into extremely fine particles, allowing it to move through the fuel system and ultimately be consumed during combustion rather than continuing to accumulate as heavy sludge.
This makes V25 particularly useful where fuel condition is unknown or where sludge and contamination are already suspected.
As with any significantly contaminated fuel system, filters should be monitored during treatment because existing contamination may be mobilised as the system is cleaned.
Treating a Diesel Bug Problem With V25
Where diesel bug, sludge or significant contamination is suspected, we recommend starting with a double dose of V25.
The standard treatment ratio is:
1 litre of V25 per 10,000 litres of fuel.
For an initial double treatment:
1 litre of V25 per 5,000 litres of fuel.
Once the fuel system has been treated, V25 can continue to be added whenever new fuel is taken onboard. This helps maintain the benefits of the treatment and manage the risks associated with taking on fuel of unknown quality.
Our online V25 dosage calculator can help determine the correct quantity for your tank.
More Than a Diesel Bug Treatment
Diesel bug control is only one part of what V25 is designed to do.
V25 combines Aderco fuel-treatment technology with a high-performance lubricity improver, providing benefits throughout the fuel system.
Regular treatment can help support:
- Cleaner injectors
- Improved combustion
- Reduced sludge and deposits
- Improved fuel stability
- Restored lubricity
- Protection of pumps and injection equipment
- Cleaner engine operation
- Reduced smoke and particulate emissions
- Greater fuel system reliability
This makes V25 particularly suited to marine applications where fuel quality, storage and reliability are critical.
Which Boats Can Use V25?
V25 is suitable for marine diesel engines across a wide range of applications, including:
- Superyachts
- Motor yachts
- Sailing yachts
- Pleasure boats
- Canal boat and narrow boats
- Workboats
- Fishing vessels
- Commercial vessels
- Tender and chase boats
- Shore based and marina fuel storage
Whether you’re treating a relatively small leisure boat tank or tens of thousands of litres onboard a larger vessel, the same highly concentrated treatment technology can be used.
How Much V25 Do I Need?
V25 is available from Premier Fuel Solutions in three sizes:
100ml – £15.00 – treats up to 1,000 litres of fuel
1 Litre – £85.00 – treats up to 10,000 litres of fuel
5 Litres – £425.00 – treats up to 50,000 litres of fuel
20 Litres – £1,700 – treats up to 200,000 litres of fuel
For an initial double dose when treating known or suspected contamination, these treatment capacities are effectively halved.
Learn More About Aderco Technology
Fuel problems rarely stop at the tank.
Water, sludge, deposits, poor lubricity and incomplete combustion can affect different parts of the fuel system, which is why V25 is designed as a complete fuel treatment rather than a single-purpose additive.
For boat owners, Captains and Chief Engineers dealing with diesel bug, or looking to reduce the chance of fuel-related problems developing in the first place, V25 provides a highly concentrated, non-hazardous approach to maintaining cleaner, more stable fuel.
One solution from tank to funnel.
Learn more about V25 Advanced Fuel Treatment and calculate the correct dose for your vessel: