Category: Fuel Tank Cleaners

Coalescer Technology: What Works and What Fails in the Field

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Condensed Technical Analysis: Coalescer Claims vs. Dieselcraft Fuel Purifier Hydrophilic coalescer membranes do attract water and allow diesel to pass, causing droplets to merge and fall out by gravity. But they only remove free and emulsified water — not dissolved water. The widely advertised “99.99% water removal” is a marketing claim, not a field verified… Read more »

Diesel Tank Water Absorbers: Protect Your Fuel and Engine

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A diesel tank water absorber is a simple, passive device placed inside a fuel tank to physically soak up and trap water so it can’t mix with your diesel, cause corrosion, or damage injectors. Think of it as a specialized absorbent “sponge” engineered to capture a specific amount of water and then be removed and… Read more »

Problems Caused by Water in Diesel Fuel and How to Prevent Them

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Water is widely regarded as the #1 enemy of diesel systems. Even small amounts—especially free water—trigger a destructive chain reaction that affects tanks, fuel lines, pumps, injectors, and the engine itself. In essence, water doesn’t just sit harmlessly—it creates a snowball effect of degradation, especially in stored, standby, or infrequently used systems (generators, marine vessels,… Read more »

WARNING: Fuel Problem – Algae in the Tank and Plugged Filters!

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**Key Issues to Address** Microbial colonies can be a significant threat in fuel tanks. They thrive when fuel and water coexist, leading to contamination and tank deterioration. Factors like warm weather and increased biofuel use worsen this risk. Once established, these colonies can consume up to 1% of your fuel investment, causing considerable losses. **Understanding… Read more »

Diesel fuel begins to degrade in less than 30 days in your storage tanks.

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Fuel degradation in storage tanks is a significant concern for industries relying on stored fuel, such as transportation, agriculture, construction, and backup power generation. Several factors contribute to fuel degradation over time, including: To mitigate fuel degradation in storage tanks, it’s essential to implement preventive measures such as: By addressing these factors and implementing proactive… Read more »

What is Fuel Polishing?

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Fuel polishing is a process that involves filtering and purifying stored fuel to remove contaminants, water, and sediments that may have accumulated over time. It is commonly used for diesel fuel and other types of stored fuels to ensure their quality, maintain optimal performance, and prevent damage to engines or equipment. Fuel polishing is particularly… Read more »

Protect Your Stored Diesel Fuel: Prevent Contamination and Engine Damage

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Protecting Stored Diesel Fuel from Contamination Diesel fuel starts to degrade and become contaminated within 28 days of storage. Typically, fuel can be stored 6–12 months, but without proper care, its quality will decline. To maximize storage life, many companies recommend: According to NFPA 110, diesel “Storage Life” is 1.5 to 2 years. Tanks should… Read more »

My Diesel Fuel is Black – Causes and Solutions

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The color of fuel indicates the fuels age or bacteria growth. The dark color is coming from one or the other. To fix old diesel remove the water first. Less than 50 gallons of fuel consider Mr Funnel to remove the water. Once the water is gone he can then filter out the solids. BUT… Read more »

Fuel Polishing for Diesel Fuel: Remove Contamination and Protect Engines

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Fuel polishing is the process used to clean diesel fuel stored in tanks by removing water, sediment, and microbial contamination. Over time, stored fuel can accumulate contaminants if it isn’t tested and treated regularly. Common Issues in Stored Diesel Fuel Stored fuel can develop: Any of these contaminants can lead to engine failure at the… Read more »