Gerry Can Fuel is trading name for FGL Marine Services Ltd based on the non tidal River Thames in Kingston upon Thames. We sell red diesel for collection or we deliver fuel directly to your vessel storage tank from our fuel bunker vessel.

Diesel bug, also known as diesel fuel contamination, is a microbial growth that occurs in diesel fuel when water gets into the fuel tank:

Poor quality or old diesel fuel can negatively impact your vehicle's performance in several ways, including:
Reduced fuel efficiency
Dirty diesel can lead to clogged filters and injector deposits, which can reduce the flow of fuel to the engine.

Rough idling
Poor quality diesel can cause your vessel to idle roughly. 
Hesitation when accelerating
Dirty diesel can cause your vessel engine to hesitate when you try to increase power to propulsion system. 
Increased emissions
Dirty diesel can cause your vessel to emit higher levels of certain types of emissions. 
Carbon build-up
Incomplete combustion from poor quality diesel can lead to carbon build-up, which can increase fuel consumption and cause your engine to lose power. 
Damage to fuel system components
Poor quality diesel can damage your fuel system components, such as filters, injectors, and pumps. 
Black sooty deposits
You might notice black sooty deposits from your exhaust system.

Vessel fuel tank cleaning which improve fuel  quality and engine performance. 

The most common way water enters a fuel tank is through condensation. Temperature differences from inside and outside the tank cause water to form in the headspace of the tank. This causes moisture droplets to “sweat” down into the fuel.

Recommendation maintain a full tank.
Keeping the tank full reduces the amount of air inside, which means less water vapor will condense when the temperature drops.

Fuel polishing is typically performed on fuel that has been stored for a long time, as fuel can accumulate impurities over time. This process can help prevent: Engine breakdowns, Fuel starvation, Blocked filters, and Seized fuel pumps.