1. Emulsifiers / Dispersants (“Water Removers”)

These break water into microscopic droplets and suspend them in the fuel. The water then passes through the system and is burned off as vapor.

Pros: Good for small amounts of water, prevents icing, avoids visible free water.

Cons: Doesn’t eliminate water—just sends it to the engine. Too much can cause wear or corrosion. Not ideal for modern high‑pressure systems.

2. Demulsifiers (Preferred for Storage Tanks)

These cause water droplets to combine and settle at the bottom as free water.

Pros: Enables true removal via drains, separators, or polishing. Reduces corrosion and microbial growth.

Cons: Requires a way to physically remove the separated water.

Key Points

•             No additive destroys or converts water; claims otherwise are marketing.

•             Best practice: Use demulsifiers + mechanical removal (drains, separators, polishing).

•             For stored diesel: choose demulsifiers and remove water regularly; avoid strong emulsifiers in bulk tanks without drainage

MORE INFORMATION

The post Why Chemical Fuel Additives Don’t Remove Water from Diesel appeared first on Dieselcraft.

Eliminate water first (the primary enabler of microbial growth—”diesel bug”). Use water separators, polishing systems, or tank drainage.

Reserve biocides for active infections: Apply at maximum recommended strength to eradicate the problem, then discontinue routine use.

Biocides are often halogenated and corrosive—overuse risks damaging components like seals, pumps, and injectors. https://dieselcraft.com/portable-fuel-polishing/

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Water enters diesel in three primary forms:

• Dissolved (invisible, fully in solution within the fuel).
• Emulsified (tiny suspended droplets that make the fuel appear cloudy or hazy).
• Free (separate liquid layer that settles at the tank bottom, since water is denser than diesel).

Main Sources of Water Contamination

Human Error or Poor Handling Practices Simple oversights like leaving fill caps unsecured, exposing drums or portable tanks to rain, improper storage, or careless refueling can allow direct water entry.

Condensation (by far the most common source) Temperature fluctuations cause fuel tanks to “breathe.” As the fuel and tank cool (e.g., overnight, during seasonal changes, or in varying weather), warm, humid air is drawn in through vents, breathers, or fill pipes. This air cools upon contact with the colder tank walls or fuel surface, reaching its dew point and condensing into liquid water droplets. These droplets accumulate and mix into the fuel. This process is exacerbated in:

Above-ground tanks (greater temperature swings).

Partially filled tanks (larger air space and surface area).

Humid climates or environments with high day-night temperature variations.

Contaminated Fuel from the Supply Chain or Delivery Water can already be present when you receive the fuel. Causes include:

Insufficient settling time at the refinery or during transport.

Shared pipelines or transport systems that introduce moisture.

Contaminated supplier storage tanks. Excess dissolved water may exceed saturation (especially as fuel cools), causing it to “fall out” as free water that settles in your tank.

Leaks or Compromised Tank Integrity External water enters through:

Damaged seals, cracked tanks, faulty vents, loose fill caps, or degraded spill containment.

Rain, snow, pressure washing, groundwater seepage, flooding, or even accidental drainage of collected rainwater into the tank.

Need help? See https://dieselcraft.com/portable-fuel-polishing/

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The Importance of Fuel Maintenance

The fuel that powers these emergency generators is just as crucial as the generators themselves. Over time, fuel can degrade due to microbial contamination, water accumulation, sediment buildup, and natural aging. If left unchecked, this deterioration can lead to generator failure when it is needed most.

Poor fuel maintenance can cause clogged filters, damaged injectors, corroded fuel systems, and reduced generator performance. In the worst-case scenario, fuel contamination may result in complete generator failure during a critical emergency.

Advantages of Fixed Fuel Polishing Systems

To counter these risks, many hospitals have adopted fixed fuel polishing systems. These systems clean and filter stored fuel, removing contaminants and water to maintain its integrity. The benefits of fuel polishing systems include:

1. Enhanced Reliability: Ensures fuel remains in optimal condition, reducing the risk of generator failure.
2. Extended Equipment Lifespan: Prevents damage caused by degraded fuel, prolonging the life of both the fuel and the generator.
3. Cost Efficiency: Reduces maintenance expenses, prevents costly generator repairs, and extends fuel usability.
4. Regulatory Compliance: Helps hospitals meet fuel maintenance regulations, avoiding potential penalties and ensuring operational readiness.

Risks of Ignoring Fuel Maintenance

Neglecting fuel care can lead to significant consequences, including:

1. Unreliable Backup Power: Degraded fuel increases the risk of generator malfunction or total failure.
2. Higher Operational Costs: Poor fuel management results in expensive repairs, equipment replacement, and potential fines for non-compliance.
3. Patient Safety Hazards: A power failure in a hospital can have life-threatening consequences if essential medical equipment becomes inoperable.

Ensuring Reliable Emergency Power

Proper fuel management requires routine testing, monitoring, and maintenance to ensure high fuel quality and availability. Hospitals must implement robust fuel management protocols to safeguard their critical infrastructure, minimize financial risks, and, most importantly, protect patient lives. In times of crisis, having a well-maintained fuel system can make the difference between seamless medical care and a catastrophic power failure. MORE INFO

The post The Vital Role of Generator Fuel in Hospitals appeared first on Dieselcraft.

Here are the key questions to investigate:

• Is the fuel clear and bright or cloudy?
• Are you using an additive? If so, which one, at what ratio, and how often?
• Is the entire fuel volume cloudy, or only the bottom around the fuel pick-up?

Fuel Sampling Steps

1. Take a sample from the water separator. Is the fuel clear and bright, or cloudy?
2. Take a sample from the top of the fuel tank. Is it clear and bright, or cloudy?
3. Take a sample from the next fuel delivery. Is it clear and bright, or cloudy?

Checking for Overdosing Issues

• Is your supplier providing a winter blend fuel?
• Is the supplier blending the additive? If so, ask for the exact ratio.
• If the fuel supplier overdosed the fuel—or if you added a cold flow improver to an already treated winter blend—you may have caused the issue.
• Water reacts to excessive additives, preventing it from being trapped by a water-blocking filter.

Understanding Additive Ratios

It’s crucial to use the correct amount of additive:

• There are 128 ounces in 1 gallon.
• If an additive treats 1 gallon per 1,000 gallons of fuel, then 1 ounce treats 7.8 gallons.
• Did you add more than the recommended amount? More is not better!

Locating and Removing the Problem Fuel

• Overdosed additives tend to sink to the tank bottom, where the engine’s fuel pick-up is located.
• Take samples from different points in the tank to determine where clear and bright fuel transitions to cloudy.
• Pump off and store the bottom fuel until the water naturally separates over time.

Testing for Contamination

To test fuel clarity, use this method: Diesel Fuel Contamination Test.
If the results are inconclusive, a lab test ($200–$400) may be required—contact us for recommendations.

Conclusion

Diesel fuel additives are a cost-effective way to improve engine performance in cold weather. They enhance cold flow without sacrificing power or performance and don’t reduce lubricity or cetane levels like kerosene.

However, excessive additive use can cause contamination issues. Based on our findings, the fuel was likely delivered with too much winter blend additive or was overdosed during treatment.

The post Troubleshooting Fuel Contamination Issues appeared first on Dieselcraft.

Dirty Fuel Might Be the Culprit!

Get your engines running at peak performance with Dieselcraft Fuel Polishing Machines! Our cutting-edge machines expertly eliminate water, sludge, and contaminants from your fuel, ensuring your diesel is always clean and ready for action. Whether you’re powering boats, trucks, or backup generators, Dieselcraft guarantees your fuel stays in prime condition—helping you save precious time, slash maintenance costs, and reduce fuel waste!

Boost Fuel Efficiency
Protect Your Engine’s Longevity
Lower Maintenance Costs

• Intuitive and High-Quality Design
• Perfect for Emergency Power Systems
• Proven Results in Eliminating Fuel Contamination

Don’t let dirty fuel compromise your performance. Choose Dieselcraft for reliable fuel solutions!
Learn more today! https://dieselcraft.com/portable-fuel-polishing/

The post Is Your Backup Generator Struggling Due to Diesel Engine Performance Issues? appeared first on Dieselcraft.

1. Header Information
   What to Look For:
   Report Date: The date the report was issued.
   Sample Identification Number: A unique number assigned to the fuel sample.
   Sample Source: The origin of the sample (e.g., storage tank, delivery truck, vehicle tank).
   Customer Information: Name and contact details of the client or organization requesting the test.
   Lab Information: Details about the laboratory that conducted the tests.
2. Test Parameters
   Common Test Parameters Include:
   Octane Number (Gasoline): Indicates the fuel’s resistance to knocking.
   Cetane Number (Diesel): Indicates the ignition quality of the fuel.
   Density: Mass per unit volume, affecting fuel efficiency and combustion.
   Viscosity: Resistance to flow, impacting fuel injection and atomization.
   Water Content: Presence of water, which can cause corrosion and microbial growth.
   Sulfur Content: Affects emissions and engine wear.
   Distillation Range: Indicates the boiling range of fuel components.
   Flash Point: Temperature at which the fuel vapor ignites.
   Cloud Point: Temperature where wax crystals begin to form.
   Pour Point: Lowest temperature at which the fuel remains fluid.
   Microbial Contamination: Presence of bacteria, fungi, or yeast.
   Additives: Concentrations of additives like detergents and antioxidants.
3. Results
   Review the Numerical Data:
   Units of Measurement: Results are typically presented in specific units relevant to each parameter (e.g., RON for octane number, ppm for water content).
   Test Results: The actual values obtained from testing (e.g., 90 RON for octane number, 10 ppm for sulfur content).
4. Reference Values
   Compare Against Standards:
   Industry Standards: Compare results with industry benchmarks or regulatory standards.
   Manufacturer Specifications: Compare results with the fuel specifications provided by equipment or vehicle manufacturers.
   Acceptable Limits: Identify if the results fall within acceptable limits for each parameter.
5. Interpretation
   Contextual Understanding:
   Performance Indicators: Assess whether the fuel meets performance criteria for intended use.
   Compliance: Determine if the fuel complies with environmental and regulatory requirements.
   Suitability: Evaluate if the fuel is suitable for specific engines or equipment based on test results.
6. Comments and Recommendations
   Expert Analysis:
   Observations: Any notable observations made by the lab technician.
   Recommendations: Suggested actions based on the test results, such as corrective measures or further testing.
   Advisories: Maintenance tips or operational advice to address any potential issues.
7. Trends and Historical Data
   Long-Term Analysis:
   Trend Analysis: Compare current results with previous reports to identify trends.
   Historical Data: Look for patterns in fuel quality over time.
   Preventive Measures: Use historical trends to implement preventive maintenance or quality control measures.
   Example Breakdown of a Fuel Test Report
   Header Information:
   Report Date: May 20, 2024
   Sample ID: 2024-05-001
   Sample Source: Main Storage Tank 1
   Customer: XYZ Logistics
   Lab: ABC Fuel Testing Lab
   Test Parameters and Results:
   Octane Number: 90 RON (Standard: ≥ 87 RON)
   Cetane Number: 50 (Standard: ≥ 45)
   Density: 0.835 g/cm³
   Viscosity: 2.5 cSt
   Water Content: 150 ppm (Standard: ≤ 200 ppm)
   Sulfur Content: 10 ppm (Standard: ≤ 15 ppm)
   Flash Point: 55°C (Standard: ≥ 52°C)
   Cloud Point: -10°C
   Pour Point: -20°C
   Microbial Contamination: None detected
   Additives: Detergent (500 ppm), Antioxidant (100 ppm)
   Interpretation:
   Octane and Cetane Numbers: Indicate good combustion properties.
   Water and Sulfur Content: Within acceptable limits.
   Viscosity, Flash Point, Cloud and Pour Points: Suitable for current climate and operational conditions.
   Microbial Contamination: None detected, indicating good storage conditions.
   Additives: Adequate levels present to ensure fuel performance and protection.
   Comments and Recommendations:
   “Fuel quality is within acceptable standards. No microbial contamination detected. Regular monitoring recommended to maintain fuel quality. Consider implementing preventive measures to avoid potential water contamination.”
   Trends and Historical Data:
   Consistent fuel quality over the past six months.
   Slight increase in water content compared to previous months; monitor closely and take preventive action if necessary.
   Conclusion
   Reading a fuel test report involves careful review and interpretation of various parameters to ensure fuel quality and compliance. By understanding the test parameters, comparing results with standards, and following expert recommendations, you can effectively manage fuel quality, enhance engine performance, and prevent costly issues. Regular testing and trend analysis are crucial for maintaining optimal fuel conditions and ensuring reliable operations. MORE INFO

The post How to Read and Interpret a Fuel Test Report from a Laboratory appeared first on Dieselcraft.

1. Quality Assurance: Testing ensures that diesel fuel meets quality standards and specifications set by regulatory bodies and industry organizations. It verifies that the fuel is free from contaminants such as water, sediment, microbes, and impurities that could harm engines or compromise performance.
2. Engine Performance: Diesel fuel testing helps assess fuel properties such as cetane number, viscosity, lubricity, and sulfur content, which directly impact engine performance. Ensuring the correct fuel properties are maintained helps optimize combustion, reduce emissions, and maximize engine efficiency.
3. Emissions Compliance: Diesel fuel testing is crucial for compliance with emissions regulations, as fuel composition directly affects the amount of pollutants emitted during combustion. Testing verifies that fuel meets regulatory limits for emissions of pollutants such as sulfur dioxide (SO2), nitrogen oxides (NOx), particulate matter (PM), and carbon monoxide (CO).
4. Operational Safety: Testing diesel fuel for characteristics such as flash point and stability helps ensure operational safety. Properly tested fuel reduces the risk of combustion hazards, such as fires and explosions, especially in storage, transportation, and handling.
5. Equipment Protection: Diesel fuel testing helps protect engines, fuel systems, and associated equipment from damage and premature wear. It identifies potential issues such as corrosion, contamination, and degradation that can lead to engine malfunctions, component failures, and costly repairs.
6. Optimized Maintenance: Regular fuel testing provides valuable data for diagnosing fuel-related problems and optimizing maintenance schedules. It helps identify trends, anomalies, and degradation patterns in fuel quality, allowing for timely corrective actions and preventive maintenance measures.
7. Fuel Economy: Testing diesel fuel can help identify opportunities for improving fuel economy and reducing operational costs. By monitoring fuel properties and performance metrics, organizations can implement strategies to optimize fuel consumption, such as selecting fuel-efficient vehicles, optimizing routes, and improving driver behavior.
8. Legal Compliance: In many jurisdictions, regulatory agencies require fuel suppliers, distributors, and end-users to conduct regular fuel testing and maintain records to demonstrate compliance with quality and emissions standards. Failure to comply with regulatory requirements can result in fines, penalties, and legal consequences.

Overall, diesel fuel testing is critical for ensuring fuel quality, protecting engine performance and equipment, achieving emissions compliance, ensuring operational safety, and optimizing fuel economy. It provides valuable insights for maintaining reliable and efficient diesel operations while meeting regulatory requirements and industry standards. MORE INFO

Contact Dieselcraft to discuss your fuel issues and testing. Call or Text 530 613 2150 Email sales@dieselcraft.com

Contact Dieselcraft to discuss your fuel issues and testing. Call or Text 530 613 2150 Email sales@dieselcraft.com

The post Diesel fuel testing is essential. appeared first on Dieselcraft.

1. Fuel Efficiency: Optimizing fuel efficiency is a primary goal of diesel management. This includes implementing practices to maximize miles per gallon (MPG) or liters per kilometer (LPK) for vehicles, machinery, or equipment powered by diesel engines. Strategies may include route planning, vehicle maintenance, driver training, and adoption of fuel-efficient technologies.
2. Engine Performance: Ensuring the optimal performance of diesel engines is crucial for achieving efficiency and reliability. Diesel management involves maintaining engines according to manufacturer recommendations, monitoring performance metrics such as power output and fuel consumption, and addressing any issues promptly to prevent breakdowns and downtime.
3. Emissions Control: Diesel engines produce various emissions, including nitrogen oxides (NOx), particulate matter (PM), carbon monoxide (CO), and hydrocarbons (HC), which contribute to air pollution and environmental concerns. Diesel management aims to minimize emissions through the use of emission control technologies such as diesel particulate filters (DPF), selective catalytic reduction (SCR), exhaust gas recirculation (EGR), and cleaner fuel formulations.
4. Regulatory Compliance: Compliance with environmental regulations and emissions standards is an essential aspect of diesel management, particularly for organizations operating fleets of diesel-powered vehicles or equipment. This includes adhering to emission limits set by government agencies, maintaining records of emissions testing and vehicle inspections, and implementing strategies to meet or exceed regulatory requirements.
5. Fuel Quality Management: Ensuring the quality of diesel fuel is vital for the performance and longevity of diesel engines. Diesel management involves sourcing high-quality fuel from reputable suppliers, implementing storage and handling practices to prevent contamination, and periodically testing fuel for impurities such as water, sediment, and microbial growth.
6. Cost Control: Managing diesel usage effectively can lead to cost savings for organizations by reducing fuel consumption, minimizing maintenance expenses, and extending the life of diesel-powered assets. Diesel management strategies may include fuel budgeting, monitoring fuel prices, negotiating bulk fuel purchases, and optimizing fleet operations for efficiency.
7. Technology Integration: Advancements in technology play a significant role in diesel management, offering opportunities to improve fuel efficiency, engine performance, and emissions control. Integration of telematics, onboard diagnostics, fuel monitoring systems, and predictive maintenance tools can provide valuable insights for optimizing diesel operations and reducing costs.

Overall, diesel management encompasses a range of strategies and practices aimed at maximizing the efficiency, performance, and environmental sustainability of diesel fuel usage and diesel engine operations. By implementing effective diesel management practices, organizations can achieve their operational objectives while minimizing their environmental footprint and ensuring compliance with regulatory requirements. MORE INFO

The post What is Diesel Fuel Management? appeared first on Dieselcraft.

Here is a sample purchased at a national brand truck stop that was delivering B20 fuel, meaning 20% Biodiesel and pulled from the trucks water separator.

B20 is a common blend because it represents a good balance of cost, emissions, cold-weather performance, materials compatibility, and ability to act as a solvent. Most Biodiesel users purchase B20 or lower blends from their normal fuel distributors or from Biodiesel marketers. Regulated fleets that use Biodiesel blends of 20% or higher qualify for Biodiesel fuel use credits under the Energy Policy Act of 1992.

B20 must meet prescribed quality standards as specified by ASTM D7467.

We are told that the state regulators passed the fuel. It is oblivious they did not use step one of a fuel test. LOOK AT THE FUEL. It is not clear and it not bright and would fail all tests as to quality immediately.

The dark layer at the bottom of the container is glycerine that has continues to drop out of the Biodiesel. This reaction should have been complete at the Biodiesel processor not after it was blended with diesel.

When this hit the engine fuel system, the engine stopped and the arguing started.

Contact the fuel supplier and your insurance company.

MORE INFO

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