Fuel Polishing
Clean Fuel. Reliable Engines. No Surprises.
Your fuel may look clean. That doesn't mean it is.
Diesel fuel can sit for months — sometimes years — in vessel tanks, generator tanks and bulk storage. During that time, water, sediment, rust, particulate contamination and microbial growth can accumulate.
Eventually, that contamination can reach the fuel system.
Blocked filters. Poor engine performance. Injector problems. Generator failure.
And when that happens, the cost of the contaminated fuel can be insignificant compared with the cost of the downtime.
Bruce Marine fuel polishing removes contamination from stored diesel and helps keep your fuel ready for when you need it.
Don't Wait Until You Have a Fuel Problem
Fuel contamination is often discovered at the worst possible moment.
A generator that has been sitting on standby for months suddenly needs to start.
A vessel leaves harbour after a period of inactivity.
A workboat goes offshore.
The engine starts — and then struggles, loses power or stops.
The fuel tank may be the last thing anyone thinks about.
Until it causes the problem.
Fuel polishing is a preventative maintenance process designed to help prevent that situation.
What Is Fuel Polishing?
Fuel polishing involves circulating stored diesel through a dedicated filtration and water-separation system to remove contamination from the fuel.
Depending on the system and condition of the fuel, the process can remove:
Water
Free water and water contamination can be removed from the fuel system.
Sediment
Dirt, rust, tank debris and settled sediment can be captured by filtration.
Fine Particles
Progressive filtration can remove smaller particulate contamination that may otherwise reach sensitive fuel-system components.
Microbial Contamination
Where microbial contamination is present, the fuel and tank condition can be assessed and an appropriate treatment strategy recommended.
The result is cleaner fuel and a better-controlled fuel system.
Why Does Diesel Fuel Become Contaminated?
Fuel tanks are not isolated from their environment.
Temperature changes can cause condensation.
Water can enter through tank vents, damaged seals or contaminated fuel deliveries.
Sediment and corrosion products can accumulate over time.
And where water and diesel coexist, microbial contamination can become a serious issue.
The longer fuel remains undisturbed, the greater the opportunity for contamination to accumulate.
The Problem With "It Looks Clean"
One of the biggest mistakes in fuel management is relying on visual inspection alone.
Fuel can appear clear while still containing contamination capable of causing problems.
That's why Bruce Marine takes a more practical approach:
Sample → Assess → Polish → Re-sample
Where appropriate, we can assess the fuel condition before treatment and monitor the result afterwards.
This gives you information about what's actually happening inside the tank rather than simply guessing from the appearance of the fuel.
Fuel Polishing for Critical Equipment
Fuel polishing is particularly valuable where equipment must work when called upon.
Standby Generators
A generator can sit unused for months before being required during a power failure.
That's not the time to discover contaminated fuel.
Commercial Vessels
Reliable fuel is essential when you're operating away from shore.
Workboats
Downtime costs money. Fuel-related failures can be particularly disruptive when the vessel is working to a schedule.
Offshore Equipment
When equipment is operating offshore, a fuel problem can become significantly more than a maintenance inconvenience.
Private & Leisure Craft
Seasonal vessels can spend long periods with fuel sitting in the tank.
If your fuel sits, fuel polishing is worth considering.
What Can Contaminated Fuel Cause?
Contamination can contribute to:
Blocked fuel filters
Injector problems
Fuel-system wear
Poor engine performance
Reduced fuel efficiency
Corrosion
Sludge accumulation
Engine shutdown
Unplanned downtime
For a critical generator or working vessel, the consequences can be substantial.
Our Fuel Polishing Equipment
Bruce Marine has dedicated fuel-polishing equipment available for marine and industrial applications.
The system allows stored fuel to be circulated through filtration and separation equipment, removing contaminants before returning the treated fuel to the tank.
We can work with:
Vessel fuel tanks
Generator tanks
Bulk diesel storage
Marine fuel systems
Commercial equipment
Standby power systems
The appropriate setup depends on the tank, fuel condition and application.
Don't Just Polish the Fuel — Understand It
This is where Bruce Marine can offer something more than a basic fuel-polishing contractor.
Our wider fluid-condition monitoring capability allows us to investigate contamination and monitor fuel condition.
We also have on-site particle-counting equipment capable of working across a range of fluids.
That means we can approach fuel problems from an engineering and condition-monitoring perspective, rather than simply circulating fuel through a filter.
Fuel Polishing as Preventative Maintenance
Fuel polishing doesn't have to be something you call us to do after contamination has already caused a problem.
It can form part of a planned fuel-management programme.
For equipment where fuel is stored for extended periods, a planned programme can include:
Initial Assessment
Establish the condition of the fuel and identify potential contamination.
Treatment
Circulate and filter the fuel to remove contamination.
Verification
Where appropriate, re-sample the fuel to assess the result.
Ongoing Monitoring
Establish an appropriate maintenance interval based on the equipment, fuel storage conditions and operating pattern.
The Cost of Polishing vs The Cost of Failure
Fuel polishing is preventative maintenance.
A polishing job costs money.
But compare that with:
A blocked filter
→ Engine failure
→ Emergency call-out
→ Replacement components
→ Lost operating time
→ Potential vessel downtime
→ Lost revenue
The economics become very simple.
Keeping fuel clean is usually cheaper than dealing with the consequences of dirty fuel.
Is Your Fuel Due a Check?
Fuel polishing is particularly worth considering if:
Your fuel has been stored for a long period
Your vessel is seasonal
Your generator is rarely used
You've found water in the tank
Fuel filters are repeatedly blocking
There is visible sediment in the tank
The fuel has a dark or unusual appearance
The equipment has been standing unused
You have recently taken on contaminated fuel
You simply don't know the condition of the fuel
You don't need to wait for a failure.
Bruce Marine Fuel Polishing
We Clean Fuel. We Investigate Contamination. We Help Protect Your Equipment.
Bruce Marine combines fuel polishing, fluid sampling and practical marine engineering experience to provide a complete approach to fuel cleanliness.
Whether you need a one-off tank clean-up, have discovered contaminated fuel, or want to establish a regular preventative maintenance programme, we can assess the requirement and recommend the appropriate approach.
Your fuel tank might be out of sight.
That doesn't mean you should forget about what's inside it.
Get Your Fuel Checked
Tell us what you've got, how long the fuel has been stored and what equipment depends on it.
We'll help you decide what needs to be done.
Bruce Marine
Fuel Polishing • Fuel Condition Monitoring • Marine Engineering • Preventative Maintenance
