by Robert Braun | May 8, 2024 | Resources
Microbial problems often can create major issues in your diesel fuel system that can cause your engine to shut down at the worst possible time along with damaged expensive fuel system components or the chance of an environmental catastrophe if fuel seeps into the ground.
Some microbial fuel issues:

- A fuel tank with a high amount of microbial contamination can no longer be used safely, it may require the removal of all fuel and complete cleaning before it can be placed back into service with new fuel.
- A generator engine will not run to its full load capacity and may shut down during a critical emergency if it’s filters are plugged (blocked) full of microbial contamination like in above images.
- An engine on a boat may suffer serious operating problems at sea due to damaged fuel pumps and injectors from microbial contamination.
- Microbial issues can also create internal damage to tanks themselves. If left unchecked microbial influenced corrosion commonly known as (MIC) can develop. If microbial contamination gets high especially common in warmer environments it produces acids within the fuel that will eat through the tank walls over time. These acids within your tank are basically the termites of the fuel world. Just like termites you will never see them until you have costly issues to repair. MIC can also lead to major safety and environmental problems, one possible scenario is that a diesel fuel tank could develop a leak from the corrosion and the fuel seeps into the ground or into the hull of your vessel.

How Microbial bugs gets into your fuel tank
As you know water in air moves from humidity to condensation, just like when you take a cold brew out of the fridge the water in the air condensates on the colder bottle to form droplets of water. This is exactly the same process that happens in your fuel tank 365 days per year.
From the night time with cooler temperatures to the day time when it’s warmer you have water forming naturally on the internal walls of your fuel tank. This water will drip into the fuel and find it’s way to the bottom of the tank where it will turn into bugs given the right conditions.
Remember your fuel tank is not a sealed unit, in order to function it must always be vented to atmospheric pressure so it must breath in order to not have negative operating pressure when the engine is running. It’s the water that forms in your tank that creates the perfect environment for microbial growth. Bugs don’t just get into your fuel tank; they grow their given the right ingredients.
Like in the image below – The tank caps says “BUY CLEAN FUEL – KEEP IT CLEAN”

Summary Tips
Water in your diesel fuel can lead to expensive repairs due to microbial growth these problems that develop can include damaged fuel injectors, defective injector pumps, blocked filters, loss of engine power and out of service equipment. You should frequently test fuel for water issues and treat the problem before it gets out of hand. No water equals no bugs so keep the H2O out of your fuel and your good to go – well your engine that is.

by Robert Braun | Apr 25, 2024 | Resources
As a marine enthusiast, I understand the challenges of keeping diesel engines running smoothly. Marine fuel systems can be very delicate and even the smallest contaminants can cause significant issues that can lead to expensive repairs.
This is where a marine fuel polishing system comes into play along with regular diesel fuel testing. In this article, I’ll discuss what a marine fuel polishing system is, how it works, and the benefits of using one for your diesel engines.
Common Issues with Marine Diesel Fuel Systems
Common issues with marine fuel systems include water and fungal contamination, sludge buildup and filter plugging.
These issues can lead to decreased engine performance and increased fuel consumption.
Fuel polishing systems help prevent these issues by removing contaminants from the fuel.

Intro to Marine Diesel Fuel Polishing
Marine fuel polishing is the process of removing water, sludge, and other contaminants from diesel fuel. Fuel polishing is necessary to maintain the quality of the fuel and prevent damage to the engine.
Contaminated fuel can cause clogged filters, injectors, and fuel lines. These issues can lead to decreased engine performance, increased fuel consumption, and eventually engine failure.
What is a Marine Fuel Polishing System?
A marine fuel polishing system is a device that removes contaminants from diesel fuel. The system works by circulating the fuel through a filter and separating the water and other contaminants from the fuel. The filtered fuel is then returned to the tank, and the contaminants are collected in a separate container and disposed of.
Marine fuel polishing systems vary in size and complexity, and they can be installed on a range of vessels, from small boats to large ships or they can be of the mobile type like below that is not a permanent mounting to the vessel.

How Does a Marine Fuel Polishing System Work?
A marine fuel polishing system works by circulating the fuel through a filter and separating the water and other contaminants from the fuel. The system typically consists of a pump, magnetic conditioner, filters, and water separator.
The pump circulates the fuel through the filter, which removes the contaminants. The separator then removes the water and other impurities from the fuel, which is then returned to the tank.
The contaminants are collected in a separate container, which can be easily removed and disposed of.
Importance of Fuel Cleanliness for Diesel Engines
Fuel cleanliness is critical for the proper functioning of diesel engines. Contaminated fuel can cause clogged filters, injectors, and fuel lines, which can lead to decreased engine performance and increased fuel consumption.
In severe cases, contaminated fuel can cause engine failure, which can be costly to repair.
Fuel polishing systems help maintain fuel cleanliness and prevent these issues from occurring.
Benefits of Using a Marine Fuel Polishing System
- Using a marine fuel polishing system offers several benefits. First, it helps maintain fuel cleanliness, which leads to improved engine performance and increased fuel efficiency.
- Second, it can save money on costly repairs by preventing engine damage caused by contaminated fuel.
- Third, it can extend the life of the fuel and reduce the need for frequent fuel tank cleaning.
- Finally, it offers peace of mind, knowing that the fuel system is clean and functioning properly.

Types of Marine Fuel Polishing Systems
There are two types of marine fuel polishing systems: portable and permanent.
- Portable systems which can be easily moved from one boat to another and they usually can be hired from fuel cleaning services.
- Permanent systems are installed directly into the fuel system.
Choosing the Right Marine Fuel Polishing System for Your Vessel
When choosing a marine fuel polishing system, it is essential to consider the size of the vessel, the fuel consumption, and the type of fuel used.
It is also essential to consider the maintenance requirements of the system and the cost of replacement filters and parts.
Installation and Maintenance of a Marine Fuel Polishing System
Installation of a marine fuel polishing system is typically straightforward and can be done by a qualified technician.
Maintenance of the system includes regular filter replacements and separator cleanings.
It is essential to follow the manufacturer’s instructions for maintenance to ensure the system is functioning correctly.

Conclusion: Marine Fuel Polishing Systems
Investing in a marine fuel polishing system is a wise decision for anyone who wants to maintain the long-term performance of their diesel engines.
Fuel cleanliness is critical for the proper functioning of diesel engines, and contaminated fuel can cause costly repairs.
By using a marine fuel polishing system, you can maintain fuel cleanliness, improve engine performance, and save money on costly repairs.
Choose the right system for your vessel, follow the manufacturer’s instructions for maintenance, and enjoy the peace of mind that comes with a clean and functioning fuel system.
by Robert Braun | Apr 25, 2024 | Resources
As a fleet manager or the owner of a diesel engine you should know that your engines performance is directly linked to the quality of fuel consumed. Diesel fuel is the lifeblood of your engine and ensuring that it is clean and of the highest quality is crucial to the longevity and performance of your equipment or vehicle.
However, with so many different factors affecting fuel quality, it can be difficult to know where to start. In this article, I will introduce you to the Wix Diesel Fuel Test Kit and explain why it is a basic tool that can be used in your fleet maintenance program if you don’t require high performance test kits.
Wix Diesel Fuel Test Kit Part #24383
The Wix Diesel Fuel Test Kit # 24383 comes with 10 test swabs.

Wix Diesel Fuel Test Kit Part #24384
The Wix Diesel Fuel Test Kit # 24384 comes with 60 test swabs.

Overall uses
They will help you quickly assess the basic quality of your diesel fuel. It is a simple and easy-to-use kit that comes with everything you need to perform on-the-spot tests to determine the general condition of your fuel.
With the Wix Diesel Fuel Test Kit, you can quickly identify any issues with your fuel, such as water, oxidation, rust/scale and sludge. The package comes with 10 cotton swabs with a special treatment, a extension stick probe, user instructions and identification test card.
What is a Diesel Fuel Test Kit?
A diesel fuel test kit is a tool that allows you to test the quality of your diesel fuel. It typically should include testing for water content, microbial growth and quality. By testing your fuel regularly, you can identify and address any issues before they cause damage to your vehicles or equipment.
Importance of Monitoring Diesel Fuel Quality
Monitoring the quality of your diesel fuel is crucial for maintaining the performance and longevity of your fleet. Poor quality fuel can cause a range of problems, including reduced fuel efficiency, engine damage, and increased emissions. It can also lead to increased maintenance costs and downtime, as your vehicles require more frequent servicing and repairs.
There are several factors that can affect the quality of your diesel fuel, including temperature changes, water contamination, and microbial growth. By monitoring your fuel regularly, you can identify and address these issues before they cause significant damage to your vehicles.
How to use the Wix Diesel Fuel Test Kit
The Wix Diesel Fuel Test Kit is designed to be easy to use, even for those with limited technical expertise. The kit includes a set of testing swabs that you can use to quickly and accurately assess the quality of your fuel. The strips detect water content and can tell you if you have dirty fuel and sludge.
Using the Wix Diesel Fuel Test Kit is simple and straightforward. Here’s how to do it:
- Collect a fuel sample from the bottom of tank using the supplied sample swab, use the extension stick provided to get to the bottom of the tank.
- View the swab tip.
- Compare the color of the testing swab to the included color chart to determine the condition of your fuel.
Pros of the Wix Diesel Fuel Test Kit
There are several benefits to using the Wix Diesel Fuel Test Kit:
Cost-Effective
The Wix Diesel Fuel Test Kit is a cost-effective solution for monitoring the quality of your fuel. It is much cheaper than sending samples to a laboratory for testing, and it can help you avoid costly repairs and maintenance by identifying issues early on.
Easy to Use
The Wix Diesel Fuel Test Kit is designed to be easy to use, even for those with limited technical expertise. The testing swabs are simple to read, and the kit comes with clear instructions to guide you through the testing process.
Basic Testing
The Wix Diesel Fuel Test Kit provides only a basic picture of your fuel’s condition, allowing you to identify issues such as water contamination which affect the performance and longevity of your vehicles.
Quick and Accurate Testing
The Wix Diesel Fuel Test Kit allows you to test your fuel quickly, without the need for technical expertise. The testing swabs like in the image below give you with a basic picture of your fuel’s condition in just a few minutes, allowing you to identify and address basic issues before they cause significant damage to your vehicles.

FAQ’S – Wix Diesel Fuel Test Kit Part #24384 / #24383
Q: Is this similar too the Napa Part #: FIL 4384 fuel analysis test kit?
A: Yes it’s the same test kit style as the Napa fuel analysis test kit.
Q: Is this similar too the Diesel Mechanic in a Bottle 4 in 1 Test Swabs kit?
A: Yes it’s the same test kit style as the Napa fuel analysis test kit.
Q: Is this similar to the Biobor Hum-Bug Detector® Kit
A: No, the Hum-Bug test kit is very different as it checks for fungal and algae growth in fuel. The Wix fuel test kit does not test for microbial fuel contamination.
A: No the Wix test kit does not test for bacteria, fungus or other Microbial issues.
Q: Can the Wix Diesel Fuel Test Kit be used for gasoline fuel as well?
A: No, the Wix Diesel Fuel Test Kit is specifically designed for testing diesel fuel.
Q: How long does it take to get results from the Wix Diesel Fuel Test Kit?
A: The testing strips provide results in just a few minutes, allowing you to quickly assess the condition of your fuel.

Customer Reviews of the Wix Diesel Fuel Test Kit
Here are some customer reviews of the Wix Diesel Fuel Test Kit:
- “The Wix Diesel Fuel Test Kit is an essential tool for any fleet manager. It’s easy to use, and the results are accurate and reliable.” – Peter B, Fleet Manager
- “We’ve been using the Wix Diesel Fuel Test Kit for over a year now, and it’s saved us a lot of money in repairs and maintenance costs. I highly recommend it to anyone who wants to keep their truck fleet running smoothly 24/7.” – Mark G, Logistics Manager
- “The Wix Diesel Fuel Test Kit is a game-changer for us. It’s so easy to use, and it gives us the peace of mind that our fuel is of the highest quality for our equipment.” – Tim K, Owner-Operator
Where to Buy the Wix Diesel Fuel Test Kit Part # 24383 or Part # 24384
The Wix Diesel Fuel Test Kit is available from a range of retailers, including online stores and automotive supply shops.
Conclusion
In conclusion, the Wix Diesel Fuel Test Kit is a basic tool for any fleet manager who wants to ensure that their vehicles are running at peak performance. By monitoring the quality of your fuel regularly, you can identify and address any issues before they cause significant damage to your vehicles, saving you time and money in the long run.
The Wix Diesel Fuel Test Kit is cost-effective, easy to use, and provides basic testing, making it an ideal solution for any fleet. So, if you want to keep your fleet running smoothly, invest in the Wix Diesel Fuel Test Kit today or one of our alternative diesel fuel test kits here.
by Robert Braun | Apr 21, 2024 | Resources
As a diesel engine owner, you understand the importance of keeping your engine running at its best. One important factor in achieving optimal engine performance is ensuring that the diesel fuel being used is of high quality.
The quality of diesel fuel can impact the engine’s power output, fuel efficiency, and overall performance.
In this article, I will explore how diesel fuel testing kits can help maximize diesel engine performance and the different types of fuel test kits available.
Understanding the Importance of Diesel Fuel Quality
Before diving into how diesel fuel testing kits can help maximize diesel engine performance, it’s important to understand why diesel fuel quality matters.
High-quality diesel fuel can lead to better engine performance and longevity. On the other hand, poor quality fuel can lead to fuel system damage and decreased performance.
One of the main factors that can impact diesel fuel quality is contamination. Contaminants such as water, microbe bugs, dirt, and other debris can cause issues such as clogged filters, decreased fuel efficiency, and decreased power output.
Additionally, poor quality fuel can contain lower levels of lubrication, leading to increased wear and tear on engine components.
Testing for Diesel Bugs

Types of Diesel Fuel Testing Kits Available
There are several different types of diesel fuel testing kits available on the market. Some kits are designed to test for specific contaminants, while others are more comprehensive and can test for multiple issues at once like our FD – Hybrid kit.
One common type of diesel fuel testing kit is a water and sediment test kit. These kits typically include tests for water content, haze quality tests and sediment level tests to check for other potential issues.
Another type of diesel fuel testing kit is a microbial growth test kit. These kits are designed to test for the presence of bacteria and other microorganisms in diesel fuel, which can lead to fuel degradation and engine damage if left untreated.
You can view a complete range of diesel fuel test kits here in our comparison tables.

How Diesel Fuel Testing Kits Work
Diesel fuel testing kits are designed to help you check the quality of your diesel fuel. These kits typically contain several tests that can help identify contaminants and other issues that could impact engine performance.
One common test included in diesel fuel testing kits is a water test. This test involves adding a small amount of fuel to a test tube and then adding a reagent that will react with any water present in the sample.
The resulting color change can help indicate whether or not water is present in the fuel.
Another common test is a sediment test. This test involves filtering a sample of fuel and then examining the filter for any debris or sediment that may be present.
Sediment and debris can indicate poor fuel quality and can lead to engine issues if not addressed.
Benefits of Using Diesel Fuel Testing Kits
Using diesel fuel testing kits can offer several benefits, including:
- Improved engine performance
- Increased fuel efficiency
- Extended engine life
- Reduced maintenance costs
By identifying potential issues early on, diesel fuel testing kits can help prevent engine damage and decrease the likelihood of costly repairs. Additionally, by ensuring that fuel quality is maintained, diesel engine owners can achieve better fuel efficiency and increased power output.

Factors to Consider When Choosing a Diesel Fuel Testing Kit
When selecting a diesel fuel testing kit, there are several factors to consider. These include:
- The specific contaminants or issues you want to test for
- The accuracy and reliability of the kit
- The ease of use and accessibility of the kit
- The cost of the kit and any ongoing expenses
It’s important to choose a diesel fuel testing kit that is well-suited to your needs and budget. Additionally, it’s important to ensure that the kit is easy to use and provides accurate and reliable results.
Diesel Fuel Problems – How Testing Kits Can Help
There are several common issues that can arise with diesel fuel, including:
- Water contamination
- Sediment and debris
- Microbial growth
- Poor fuel quality
Diesel fuel testing kits can help diagnose these issues early on, before they have a chance to cause engine damage or decreased performance.
By identifying potential issues early on, diesel engine owners can take steps to address them and prevent more serious problems down the line.
How to Use a Diesel Fuel Testing Kit
Using a diesel fuel testing kit is a relatively simple process. Most kits come with detailed instructions and all of the necessary equipment to perform the tests.
To get started, you’ll need to collect a small sample of diesel fuel from your engine. This can typically be done using a special test tube or other container provided with the kit. Once you have a sample, you’ll perform the necessary tests according to the kit’s instructions.
After performing the tests, you’ll be able to interpret the results and determine whether or not any issues are present with your diesel fuel.
Best Practices for Diesel Fuel Testing
To get the most out of your diesel fuel testing kit, there are several best practices to keep in mind. These include:
- Testing fuel on a regular basis, ideally every time you refuel
- Using a clean, dry container to collect fuel samples
- Ensuring that the testing kit is properly calibrated and in good working order
- Following the instructions provided with the kit carefully and accurately
By following these best practices, you can ensure that your diesel fuel testing results are accurate and reliable, and that any potential issues are identified early on.
Conclusion
In conclusion, diesel fuel quality is a critical factor in achieving optimal diesel engine performance.
Diesel fuel testing kits can help identify potential issues with fuel quality early on, leading to improved engine performance, increased fuel efficiency, and extended engine life.
By choosing the right kit, following best practices, and performing regular testing, diesel engine owners can ensure that their engines are running at their best.
by Robert Braun | Apr 21, 2024 | Resources
Dye is added to diesel fuel to indicate its intended use and if specific taxes have been paid or been exempted from. The purpose of diesel fuel dye is to differentiate between diesel fuel that is intended for on-road and off-road use. The dyed or no dyed fuel indicates too enforcement officers so they can identify issues if someone is doing the wrong thing.
Dyed fuel helps keep the industry and end users accountable which ensures that diesel fuel is being used as per the law and tax regulations, well most of the time.
In this article, I will provide you with all you need to know about diesel fuel dye and compliance regulations.
Intro to Diesel Fuel Dye and Compliance Regulations
Red fuel is also commonly called marked fuel, farm fuel, and “red-dyed” diesel.
Off-road red colored diesel fuel is intended to be used in equipment and vehicles that are not operated on a regular public road, typically this fuel would be used in equipment on farms, train locomotives, forklifts, construction equipment, marine equipment, miscellaneous equipment and electric power generators.
On-road clear colored fuel is intended for use for any vehicle or equipment operating on a public road. This typically includes cars, trucks or similar vehicles.
Key Points to Note
- Off-road diesel fuel is usually dyed with a red chemical, this dye indicates the fuel is intended for off-road equipment and vehicles, typically it has not had or will not have fuel taxes paid (by rebates) on the sales price. Red diesel fuel by law should not be used to power (propel) a vehicle or equipment operating on a public road. The only exceptions for on-road use could be something like a refrigerated road transport unit that can use off-road fuel to power the engine for the fridge plant either mounted on the truck itself or on the trailer unit.
- On-road (regular) diesel fuel used in everyday transport equipment and vehicles is a clear color normally. This fuel has tax paid on the sales price.
Hate Reading? Watch The Video Below
Purpose of Diesel Fuel Dye
The purpose of diesel fuel dye is to differentiate between diesel fuel that is intended for on-road and off-road use. On-road diesel fuel is subject to federal and state fuel taxes, while off-road diesel fuel is exempt from these taxes.
The use of diesel fuel dye helps ensure that off-road diesel fuel is not being used for on-road purposes, and thus, not subject to the proper taxes.
Diesel fuel dye helps prevent tax evasion. If diesel fuel were not dyed, it would be difficult to determine whether the fuel was being used for on-road or off-road purposes so off-road tax free fuel would be used by regular road users without fear of being caught.
Depending on where you live red fuel may be available to purchase, the seller by law must clearly state the legal uses of the fuel at point of purchase.

Different Diesel Dye Colors
The dye color indicates what the diesel can be used for by law or intended applications.
- Red: Red diesel is the most common type of dyed diesel. Red diesel can only be used in off-road vehicles and machinery.
- Blue: Blue diesel is not available for public purchase. Blue diesel is only used for government vehicles and equipment.
- Green: Green (regular) diesel isn’t dyed. The green in the name refers to it being a more eco friendly fuel for on-road use.
Other colors used outside the USA can be purple dyes, yellow dyes, blue dyes and green dyes to differentiate from regular diesel.
Regulations for Diesel Fuel Dye
The use of diesel fuel dye is regulated by federal and state laws. Federal law requires that all diesel fuel that is intended for on-road use be dyed with red dye. Federal law also requires that diesel fuel retailers keep records of their sales and make the records available upon request.
State laws may vary regarding the use of diesel fuel dye. Some states may require that diesel fuel that is intended for off-road use be dyed with a specific color other than red. Some states may also have additional record-keeping requirements for diesel fuel retailers.
Benefits of Diesel Fuel Dye
The use of diesel fuel dye provides several benefits. One benefit is that it helps ensure that diesel fuel is being used for its intended purposes. This helps prevent tax evasion and ensures that fuel taxes are being paid in the correct application. Another benefit is that it helps keep the users of diesel fuel accountable and paying the correct taxes.

Types of Diesel Fuel Dye
There are several types of diesel fuel dye available depending on the country or area. The most common type of diesel fuel dye is Solvent Red 164. Other types of diesel fuel dye include Solvent Blue 35 and Solvent Green 3.
Red Diesel has no impact on engine performance. Generally off-road red diesel may have a higher sulfur content than regular fuel, this may create a smokier burn but it’s fine to use in any diesel engine – just don’t get caught using it in the wrong application.
Compliance Requirements for Diesel Fuel Dye
Compliance requirements also include keeping records of diesel fuel sales and making the records available upon request.
Diesel fuel retailers usually must also provide their customers with a display statement that explains the intended use of the diesel fuel they are purchasing.
The statement must include a warning that using the fuel for unintended purposes is illegal depending on the local laws.

How to Test for Diesel Fuel Dye Compliance
There are several ways to test for diesel fuel dye compliance. The most common method is to use a test kit that is designed to detect the presence of diesel fuel dye.
The test strip is dipped into the diesel fuel sample, and the color is compared to the color comparator. If the color of the diesel fuel matches the color on the color comparator, then the diesel fuel is compliant.
Penalties for Non-Compliance
Non-compliance with diesel fuel dye regulations can result in penalties. Penalties may include min fines of $1000 and more. The specific penalties may vary depending on the severity of the violation and the state or country where the violation occurred.

Conclusion
In conclusion, diesel fuel dye is an essential component of ensuring that diesel fuel is being used for its intended purposes and taxes have been paid accordingly.
Compliance regulations help keep the industry accountable and ensure that diesel fuel is being used for it’s intended purpose.
Failure to comply with diesel fuel use by on or off-road regulations can result in penalties.
NB: This info may change over time so accuracy cannot be assured. This information is USA focused and may be not relevant for other countries. Example of different regulations on dyed fuel, it can be used in forklifts in the USA but in the UK it’s not allowed.