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Fuel Restoration

Fuel restoration or what is commonly known as fuel polishing is a process used to restore stagnant or degraded fuel back to health. FuelGuard’s state-of-the-art process uses a multi-staged filtration system to remove pollutants, water and microbial growth. During the cleaning process a fuel additive is added to the fuel to kill microbial growth and aid in the fuel restoration process.

Tank Cleaning

FuelGuard uses low pressure to gently wash the walls of the tank with the biocide treated fuel in the tank. High pressure is not used due the possibility of making internal tank defects worse. Having cleaned hundreds of tanks, FuelGuard specialists have found that the low pressure washing achieves maximum results without damaging the inside of the tank.

Corrosion Abatement

Corrosion damage is a major problem with fuel systems today. FuelGuard identifies the corrosion issues in each tank system it treats. A plan is developed to remove and treat the corrosion found attacking the system. FuelGuard goes far beyond a simple sweep of the fuel in the tank.

Call Corey Agnew, Director of Fuel Quality, at 904-349-2347

Schedule an Appointment

FuelGuard Services

FuelGuard provides a repair and maintenance plan for fuel tank owners and operators to follow resulting in lower maintenance costs, lower liability and higher fuel quality.  FuelGuard offers a number of customizable programs dependent on the customer’s needs and budget.

What’s In Your Tank?
CALL TODAY: 904-349-2347


  • Fuel Cleaning Program
  • Sump Vapor and Humidity Program
  • Biocide Additive Program
  • STP Corrosion Program
  • Compliance Program

What Others Are Saying

Don’t just take it from us, let other experts do the talking!

“90% of diesel fuel engine failures are related to fuel quality issues”


Caterpillar, Inc.

“Diesel with a small amount of bio mixed in degrades in storage by 26% in the first month. And if there’s water present, it degrades 95%.”

The University of Idaho

“Degraded fuel – especially if it is acidic, which is almost always the case – can also cause corrosion with the fuel system components.”

Worldwide Power Products

Our Partners

Biobor is the additive FuelGuard uses during its process.

Our parent company

Incon corrosion vapor products.

See The Difference

What’s In Your Tank?

There are numerous warning signs indicating fuel quality issues. FuelGuard’s Certified Technicians are well equipped to identify the warning signs. If you are changing fuel filters frequently, experiencing slow-flow issues, pumping equipment failures, and rising engine maintenance costs to engines using the bad fuel. FuelGuard analyzes the fuel system and develops a tailored program for each of its customers.


With every system cleaning FuelGuard Certified Technicians complete a full system assessment and analysis. All aspects of the fuel system are inspected and a multi-page report is provided to the customer. The report identifies deficiencies and provides the system owner with a plan to repair and maintain the system optimally.


Every tank owner must have a prevention plan. FuelGuard provides its customers with a comprehensive plan to clean fuel, lower maintenance costs and lower potential liability. Clean fuel means safer and more efficient engine performance. Clean fuel means lower costs and lower emissions. What’s in your tank? Do you have a prevention plan in place?

Frequently Asked Questions

What is FuelGuard?

FuelGuard was created in response to the ever-increasing problems associated with poor fuel quality and corrosion predominately associated with Microbial Influenced Corrosion. Today’s fuels have a short lifespan compared to the fuels of ten years ago. Diesel’s shelf life is thirty days. FuelGuard’s process was developed to help the fuel system owner extend the life of the fuel and maintain the fuel system.

What is MIC?

MIC is an acronym for Microbial Influenced Corrosion. Today’s fuel systems are prone to serious corrosion issues. These issues are primarily due the fuels presently being used. Diesel fuel today has a lower sulfur content. Sulfur was a natural inoculation for the fuel. Since the new fuels mandated by the EPA, the lower sulfur content means more microbial growth. The microbial growth in fuel today can happen over-night and is likely responsible for corrosive damage to the fuel system and the equipment the fuel is pumped into.

Why do I need clean fuel?

Dirty fuel represents a liability you cannot afford to ignore. Twenty percent of all backup generation systems will not start or will sputter to a stop minutes after starting due to dirty fuel. Dirty fuel will account for higher maintenance costs and if ignored to too long will result in catastrophic costs and potential liability. Dirty fuel is equal to failure.

What kinds of fuel can FuelGuard clean?

The FuelGuard process works on diesel fuel and gasoline alike. Fuels can be cleaned down to 1 micron. Ethanol enriched gasoline that is phase separated can be reversed.

Why are fuel quality issues more prevalent today than ten years ago?

Today’s fuels are not the fuels of the early 2000’s. The EPA mandated a low sulfur fuel slate, the removal of lead and the addition of ethanol in gasoline. These three mandated changes have resulted in some unintended consequences. The sulfur and lead previously found in fuels worked to kill microbes. Today a proactive approach must be taken to reduce the negative effects of microbial growth.

How does water enter my fuel?

Water is ALWAYS present in fuel. Trace amounts are always present; however, larger quantities of water can enter though natural means like condensation or systemic problems like a leaky system.

Can fuel cleaning/polishing permanently fix my fuel quality issues?

In short, no. Fuel degradation will occur over time. The only way to keep it out is to have a maintenance plan that regularly addresses the issues. Fuel cleaning is just one step in the process.

How important is it to take regular fuel samples?

The only way to know what is in your tank is to take a sample. Diesel fuel has a shelf-life of 30 days and gasoline has a shelf-life less than 90 days. Bottom samples should be taken regularly – preferably once per month.

Is a fuel system assessment really necessary?

Regular system assessments should be a part of your maintenance program, including monthly fuel sampling and visual inspections followed-up by yearly detailed inspections.  Knowing the condition of your fuel and system will save you money in maintenance and head off potentially serious liabilities.

What is better to clean a tank – high pressure or low pressure?

FuelGuard uses a lower pressure system. High pressure has the potential to damage existing defects in a tank wall. Low pressure achieves a good result without damaging the inside of the tank system.

Can FuelGuard test my fuel?

Yes, FuelGuard can perform an onsite test or provide the tank owner with a self-test kit to determine the amount and type of microbial contamination that is present in the fuel.

What happens to engines that use bad fuel?

Most engines cannot tolerate dirty fuel. If fuel is not kept clean and free of microbial contamination, maintenance costs will rise drastically. Eventually catastrophic failure is inevitable. Everything from premature filter replacements to complete system failures.

How long does fuel last?

Diesel fuel has about a 30 day shelf-life. If water is present it will degrade by 95% within the first 30 days. Gasoline has a 30-90 day shelf-life.

Contact Info:

Call Corey Agnew
Director of Fuel Quality
Phone: 904-349-2347
Email: info@myFuelGuard.com

“Fuel contamination is a major cause of premature shutdown for standby engine generator sets, fire pump engines and other diesel engine support functions. Contamination commences as soon as the storage tanks are filled and continues until the fuel is used.”

Factory Mutual Research Corp.

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