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.

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

The post Diesel Engine Quit? Mystery Liquid in Fuel System – What to Do appeared first on Dieselcraft.

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:

• Keep fuel cool, ideally around 70°F
• Treat with biocides and stabilizers
• Maintain tanks per NFPA 110 standards

According to NFPA 110, diesel “Storage Life” is 1.5 to 2 years. Tanks should be sized so fuel is consumed within that period, or stale fuel must be replaced.

The Most Critical Step: Keep Water Out

Water is the number one killer of stored diesel fuel. It encourages microbial growth, leading to bacteria, sludge, and engine damage.

• No water = no bacteria
• No bacteria = no need for biocides

Regular fuel polishing is the most effective way to remove water, sediment, and microbes—but it can be expensive.

Deciding on Fuel Management

Consider your fuel volume:

• 200 gallons vs 5,000 gallons – costs and methods vary.
• Decide if contracting a fuel polishing service or investing in a machine makes the most sense for your operation.

Meanwhile, for small tanks, simple devices can quickly remove water and prevent early contamination.

Buy Here

For the chemical treatment to stabilize the fuel this is the BEST!

Buy Here

The post Protect Your Stored Diesel Fuel: Prevent Contamination and Engine Damage appeared first on Dieselcraft.

1. Cleaner oil, GUARANTEED.

2. 30-50% longer oil life. This means cost of oil changes goes down by at least 30%. The cost of oil is going UP. Your $250 change today may be $350 soon.

3. Longer full-flow filter life.

4. Longer service intervals.

5. Reduces engine wear up to 50%.

6. Long-term preventative maintenance.

7. Reduced maintenance costs… If you cut oil changes by 33% how much do you save?

8. Cuts waste disposal costs. A centrifuge is permanent, cleanable and reusable.

9. Improves your regulatory compliance by protecting the environment.

10. No media or filter elements to replace.

11. Reduces total cost of ownership.

12. Helps ensure clean combustion and fuel efficiency.

MORE INFO

The post 12 Benefits of Using an Oil Centrifuge for Diesel Engines appeared first on Dieselcraft.

Recycling Oil Filters

Recycling is the preferred alternative to disposal. An oil filter crusher presses filters down to 25% of their original size, allowing more filters per drum and reducing collection and hauling fees. The more filters you crush and recycle, the more money you save.

Cut Costs and Extend Oil Life

Instead of relying solely on filters, consider a bypass oil centrifuge system:

• Reduces the need for filters by up to 50%
• Extends engine oil life
• Lowers operating costs
• Reduces waste and environmental impact

Investing in proper oil filter management and a centrifuge system saves money, ensures compliance, and protects your diesel engines.

More information

The post Reduce Costs and Risk with Oil Filter Recycling and Centrifuge Systems appeared first on Dieselcraft.

Features of the DEF-1 Test Kit

• Detects water and DEF in all diesel fuel
• Results in less than one minute
• Non-toxic and completely safe to use
• Indicates PASS or FAIL for free DEF in diesel

Kit Includes:

• 1 test tube
• 10 test strips
• 1 transfer pipette

How to Use the DEF-1 Test Kit

1. Ensure your sample contains free water or DEF—look for separation at the bottom of your tank or container.
2. Place a test strip in the tube, colored end down.
3. Using the pipette, add fuel from the bottom of the container until the tube is ¾ full.
4. Close the tube and inspect the strip:
   • Water: turns brown to pink
   • DEF: turns blue in seconds
5. Dispose of the sample and strip per local regulations. Reuse the tube and pipette for the next test.

Protect Your Diesel Fuel
Regular testing with the DEF-1 kit can prevent costly engine damage and ensure your fuel system remains safe and reliable. BUY IT HERE

The post Diesel Fuel Water & DEF Test Kit – Detect Contamination Quickly appeared first on Dieselcraft.

1. Reuse Waste Oil for Multiple Purposes

Cleaned waste oil can lubricate motorized equipment or be used as heating oil in waste oil heaters. Instead of letting drums of oil sit idle, recycling makes them a practical, cost-effective resource.

2. Save Money

Sending waste oil to recycling facilities often comes with fees. By cleaning and recycling your own oil, you reduce both disposal and purchasing costs, lowering your overall operating expenses.

3. Protect the Environment

Improperly disposed waste oil contaminates soil and water and increases the demand for new oil production. Recycling oil reduces environmental harm while conserving resources.

Take Action Today

Dieselcraft Fluid Engineering offers waste oil cleaning systems that make recycling simple and effective. Bring your waste oil back to life and enjoy cost savings, equipment protection, and environmental benefits.

Call us today: 530-613-2150

The post Turn Waste Oil into Savings: Benefits of Recycling with a Cleaning System appeared first on Dieselcraft.

Here are the two most common (and costly) threats to your diesel engine:

1. Water: The Silent Destroyer

Water contamination is the leading cause of diesel engine problems—and it’s more common than most people realize.

Water can enter your fuel system in several ways:

• Contaminated fuel from suppliers
• Condensation inside storage tanks
• Poor handling or storage practices

Once water is present, things escalate quickly. Microbes begin to grow at the fuel-water interface, creating sludge and producing even more water as they multiply. Left unchecked, this contamination spreads throughout your system.

When water reaches your engine, the consequences can be severe:

• Steam formation under high temperatures
• Cracked or damaged fuel injectors
• Corrosion of internal components
• Complete system failure

Important: Damage caused by water in fuel is typically not covered by warranties.

2. Fuel Contamination & Degradation

Diesel fuel isn’t as stable as many assume—it has a limited shelf life. In fact, fuel can begin to degrade in as little as 30 days, especially when exposed to:

• Heat
• Air (oxidation)
• Moisture

As diesel breaks down, it forms:

• Gum and varnish deposits
• Sediment and sludge
• Darkened, unstable fuel

This degradation feeds directly into the water problem. More contamination means more microbial growth, which leads to:

• Clogged filters
• Reduced engine performance
• Unexpected shutdowns

If not addressed early, these issues can bring your engine to a halt.

Stop Problems Before They Start

The key to avoiding diesel engine failure is early detection and prevention.

If you suspect your fuel may contain water or contaminants, don’t wait for symptoms to appear. Testing your fuel now can save you thousands in repairs later.

Dieselcraft offers fuel test kits designed to quickly identify contamination issues—so you can take action before damage occurs.

Order Test Kits or Call 530-613-2150 today to order your fuel test kit and protect your engine from preventable failure.

Bottom line: Water and contamination don’t fix themselves—they get worse over time. The sooner you detect and remove them, the longer your engine will last. BUY HERE

The post Top Causes of Diesel Engine Failure: Water Contamination & Fuel Degradation Explained appeared first on Dieselcraft.