Diesel Craft Fuel Test Kit

Protect your valuable diesel engines from the number one cause of failure: contaminated fuel. The Diesel-Craft Fuel Test Kit is a simple, effective, and indispensable tool for any operator, mechanic, or fleet manager who relies on clean diesel fuel. In less than five minutes, this kit provides a clear visual assessment of your fuel’s condition, allowing you to identify problems before they lead to catastrophic damage and expensive downtime.

Contaminants like water, sludge, rust, and asphaltenes are often invisible in fuel tanks but can wreak havoc on modern high-pressure fuel injection systems. This test kit, which follows the principles of the ASTM D4176 standard, makes it easy to spot these hidden threats. Simply take a fuel sample in the provided glass jar, swirl it, and let it settle. You will be able to instantly see separated water pooling at the bottom and identify suspended particulate matter.

How It Works

The Diesel Craft Fuel Test Kit uses a dip-slide coated with nutrient media designed to detect microbial activity. When the slide is dipped into a fuel sample, any microorganisms present—such as bacteria, mold, or yeast—adhere to the surface. The slide is then stored in its protective container at room temperature. Within 24 to 72 hours, microbial colonies (if present) will multiply and become visible as spots, discoloration, or growth patches. This simple process allows you to confirm fuel contamination without the need for laboratory testing.

Why Use It

Contaminated diesel fuel is one of the leading causes of engine failure and system downtime. Microbes thrive in the water and sludge that collect at the bottom of fuel tanks, and once they multiply, they can:

• Block fuel filters and restrict flow, starving engines of fuel.

• Corrode injectors, pumps, and metal components inside the fuel system.

• Reduce fuel efficiency and increase maintenance costs.

• Lead to costly downtime of vehicles, generators, or marine engines.

Using this test kit gives you an early warning before these problems occur, helping you maintain reliability and avoid expensive repairs.

Applications

The test kit is suitable for anyone who stores diesel or biodiesel fuel for extended periods. It’s commonly used in:

• Marine fuel tanks and yachts – where warm, damp conditions make microbial growth a constant threat.

• Emergency backup generators – especially in hospitals, data centers, and industrial facilities where fuel often sits unused for months.

• Fuel storage depots and bulk tanks – to ensure large quantities of stored diesel remain clean and usable.

• Trucks, buses, and heavy equipment – where downtime caused by contaminated fuel leads to major financial losses.

How to Use It

1. Collect a sample of diesel in a clean, clear container from the bottom of the tank (where microbes are most likely to settle).

2. Dip the slide into the sample for a few seconds so the nutrient-coated surface is exposed to the fuel.

3. Seal the slide back in its container and keep it at normal room temperature, away from direct sunlight.

4. Wait for results between 24 and 72 hours. Visible microbial growth (spots, colonies, or discoloration) confirms contamination in your fuel supply.

Why Choose This Kit

• Quick on-site testing – no need to send samples to a lab or wait weeks for reports.

• Fast results – see clear signs of contamination within 1 to 3 days.

• Easy to use – designed for non-technical users, with straightforward instructions.

• Cost-effective – affordable compared to the expense of repairing or replacing contaminated fuel systems.

• Versatile – works with diesel, biodiesel, and blended fuels, making it suitable for multiple industries.