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 spec.

Actual published data shows:

•             99.5% single pass removal at 5 microns

•             Efficiency drops sharply with:

•             Biodiesel blends (B20 holds 3–4× more dissolved water than B5)

•             Surfactants in ULSD and additives

•             Microbial byproducts

•             High solids loads

Because biodiesel is hygroscopic and modern diesel contains surfactants, 99.99% is only achievable in ideal lab fuel, not real world diesel.

Why Dieselcraft Outperforms Coalescers

Proprietary Media (Unique Advantage)

Dieselcraft is the only purifier using a proprietary media bed engineered to:

•             Break water out of suspension

•             Capture heavy solids

•             Stabilize flow

•             Increase separation efficiency

This media:

•             Is not a filter

•             Does not plug

•             Never needs replacement

No coalescer or filter system offers an equivalent mechanism.

Immune to Coalescer Failure Modes

Coalescers fail when exposed to:

•             Surfactants in ULSD

•             Biodiesel blends

•             Additives

•             Microbial growth

•             High particulate loads

Dieselcraft’s purifier is unaffected by all of these.

It maintains performance in real‑world diesel, not just clean test fuel.

Consistent, Long Term Performance

Coalescers degrade as:

•             Elements load

•             Membranes saturate

•             Flow changes

•             Additives reduce coalescing

Dieselcraft remains stable because:

•             No media to saturate

•             No element to plug

•             No chemical sensitivity

•             No flow dependent coalescing behavior

It performs the same on day 1 and day 1,000.

Bottom Line

The Dieselcraft Fuel Purifier is superior because it is:

•             Filter less

•             Low maintenance

•             Highly efficient

•             Unaffected by modern diesel chemistry

•             Designed for realm world contamination

•             Proven to reduce engine wear and extend service intervals

It is the only purifier combining mechanical separation with a proprietary media bed, delivering unmatched reliability and performance. MORE INFO

The post Coalescer Technology: What Works and What Fails in the Field appeared first on Dieselcraft.

What It Is

• A water‑absorbing insert designed for diesel tanks in vehicles, generators, boats, RVs, farm equipment, and storage tanks.
• Typically shaped like a pouch, sock, or small cylinder.
• Made from super‑absorbent polymers that selectively absorb water — not diesel fuel.
• Includes a retrieval cord so it can be easily removed and inspected.
• Must be checked periodically and replaced once saturated.

How It Works
Water naturally accumulates in diesel tanks through:

• Condensation
• Contaminated fuel deliveries
• Long‑term storage
  Once placed in the tank:

1. The absorber sinks to the bottom where water collects.
2. It pulls in and traps free water molecules.
3. When it reaches its rated capacity (e.g., 7.2 oz), it stops absorbing.
4. You remove it, discard it, and replace it with a fresh one.

Why It Matters
Water in diesel can lead to:

• Injector damage
• Microbial growth (“diesel algae”)
• Rust and corrosion inside tanks
• Hard starts, rough running, or power loss
• Fuel filter clogging
  A water absorber helps prevent these issues without adding chemicals to your fuel.

Typical Use Cases

• Long‑term storage tanks
• Backup generators
• Boats and RVs
• Farm equipment
• Diesel trucks that sit unused for extended periods

How to Use It

1. Drop the absorber into the tank through the filler neck.
2. Make sure the retrieval cord stays accessible.
3. Leave it in place during storage or operation.
4. Check periodically and replace when saturated.

More info at

The post Diesel Tank Water Absorbers: Protect Your Fuel and Engine appeared first on Dieselcraft.

Consider this scenario:

• A generator requires 24 hours of runtime at full load, burning 20 gallons per hour. You need 480 gallons for full coverage.
• If you run the generator 15 minutes per month, you’ll consume only about 21 gallons per year. Without a major outage, most of your fuel remains unused for 8 years.
• Even if you top off every two years with 50 gallons, the majority of the tank—430 gallons—is old fuel, now 24 months old. Adding new fuel does not fix the problem.

Why Old Diesel Fuel Is a Problem

To comply with NFPA 110 (Standard for Emergency and Standby Power Systems), fuel must remain “clear and bright” and meet ASTM D975 standards.

• After 90 days, diesel begins to discolor and solids form.
• Fuel that is no longer clear and bright can cause engine damage, clogged filters, and failed emergency starts.

Hope is not a plan.

How to Solve the Problem

The best way to maintain emergency generator fuel is:

• Regular fuel testing to monitor quality
• Fuel polishing systems to remove water and solids
• Additives to stabilize fuel and improve performance

For professional solutions, contact Dieselcraft at sales@dieselcraft.com.

The post Why You Should Worry About Your Generator’s Old Diesel Fuel appeared first on Dieselcraft.

Water Contamination
Even small amounts of water in diesel can crack injectors, corrode fuel lines, and reduce combustion efficiency. Sources include biodiesel blends, condensation, rain, and poorly maintained storage tanks.

Microbial Growth and Sludge
Bacteria in fuel (“fuel bugs”) produce bio-mass sludge that clogs filters and reduces engine performance. Mislabeling this as “algae” is a common error.

Fuel Degradation
Diesel begins breaking down within 30 days of refining, forming dark deposits that foul systems and shorten engine life.

Solutions: Prevention and Treatment

• Fuel additives: Improve combustion, lubricity, cold flow, and cetane rating
• Water removal: Drain tanks, use separators
• Fuel polishing: Circulate and filter fuel regularly to remove contaminants
• Testing: Identify water or microbial contamination early using fuel test kits

Conclusion
Up to 80% of diesel engine failures are linked to poor fuel quality. Regular testing, proper storage, and treatment with additives and fuel polishing are the best ways to protect your engine, extend component life, and prevent costly downtime. BUY HERE

The post Diesel Fuel Quality: Prevent Engine Damage from Water & Contamination appeared first on Dieselcraft.