Want to make black diesel, but don’t have the right filters for it? Here’s what we’ll show you.

Oil filtering, to remove solid contamination is the most important part of using any Waste Motor Oil, WMO as fuel additive.

Dieselcraft offers Basic Waste Oil Centrifuge kits for you to build your own system with our guidance or complete PLUG AND PLAY  “Fuel Factory” systems. Our systems will remove contamination from any oil to less than 2 micron making it ready for making Black Diesel from WMO, Waste Motor Oil, Transmission Fluid or Hydraulic Oil or cleaning waste vegetable oil (WVO), for bio-diesel and diesel blends.

These centrifuges generates centrifugal force 2,000 times greater than gravity at 7500 RPM and will clean your oil ten times more efficient than any filter with no on going cost of operation.

Oil filtering has never been so simple.

The Dieselcraft Model 60, 60 gallons Per Hour Basic Waste Oil Centrifuge Filtration Units are the easiest and cost effective way to clean your waste oil.

The basic process:

When building a filtration unit, you will need an open top 55 or 30 gallon steel drum, a centrifuge, a “gear pump” and motor and a drum heater.

Begin by straining your oil to remove the larger particles.

Heat your oil to 150 -180º F with the 1200 watt drum heater. Two heaters may be needed for winter operation.

Pump the hot oil through the centrifuge for two to four hours. After a few hours you will have oil ready for blending.

There are no filters or filter bags to replace – simply clean out the rotor in the centrifuge when it is full.

Used in the alternative fuels market for over 20 years with a 2 year warranty on all centrifuge parts.

Here is oil before and after the centrifuge process on the test paper. 99% of the solids have been removed from 50 gallons of oil. Simple!

#1 Starter Option.

  • Centrifuge only kit: 60 gallons per hour Model 60
  • Includes:
  • Centrifuge
    Mounting plate for 55 gallon drum side mount or drain pipe mounting
    Control valve with pressure gauge, fittings, ball valve and 10 feet of pressure hose.
  • To make the system work you need a Standard Duty gear pump: Rotary Pump, Carbonator, Cast Iron, 3.2Lift
  • Mfr # 41TK25 Zoro # G2576983  or equivalent that will give you at least 1.5 gallons per minute at 100 psi. The more flow the pump puts out will be bypassed, meaning a 10 gallon per minute pump will only clean 1 gallon and bypass 9 gallons. Do not get a pump with more than 1/2 HP or you will be breaking things.
  • Call us if you need help and the complete needed parts list.
  • Centrifuge Kit Price $499 FREE SHIPPING

Frequently Asked Questions – 50 Gallon Waste Oil Filter System

What is the Dieselcraft 50 Gallon Waste Oil Filter System?

The Dieselcraft 50 Gallon Waste Oil Filter System is a centrifuge-based oil cleaning system designed to remove water, soot, carbon, wear metals, sludge, and other contaminants from used motor oil, hydraulic oil, transmission fluid, gear oil, biodiesel, and waste vegetable oil. Unlike traditional filtration systems, it uses centrifugal force rather than disposable filter elements.

How does the system clean waste oil?

The system pumps heated oil through a high-speed centrifuge. The spinning rotor generates thousands of times the force of gravity, causing contaminants to separate from the oil and collect inside the rotor while clean oil returns to the tank. Some water will evaporate but most will drop to the bottom of the process tank.

What contaminants can be removed?

The system removes:

  • Carbon and soot
  • Dirt and dust
  • Wear metals
  • Water
  • Sludge
  • Oxidation byproducts
  • Microbial debris

The centrifuge can remove contaminants smaller than 2 micron.

What types of oil can be processed?

The system can process:

  • Used motor oil
  • Hydraulic oil
  • Automatic transmission fluid (ATF)
  • Gear oil
  • Biodiesel
  • Waste vegetable oil (WVO)
  • Industrial lubricants

Do I need to buy replacement filters?

No. The system uses centrifugal separation and does not require disposable filter cartridges or filter bags. Simply clean the rotor when it becomes full of contaminants.

Why should oil be heated before processing?

Heating oil to approximately 150°F–180°F reduces viscosity and helps release water and contaminants from the oil. This significantly improves cleaning efficiency and processing speed.

How long does it take to clean 50 gallons of waste oil?

Processing time depends on contamination level, oil temperature, and desired cleanliness. In most applications, 50 gallons can be heated and processed in approximately 2–4 hours. Multiple passes may be recommended for heavily contaminated oil.

How clean can the oil become?

The system is capable of removing more than 99% of suspended solids and reducing contamination levels to less than 2 microns in many applications.

Can the system remove water?

Yes. Free water and much of the emulsified water can be removed during the heating process.

How often does the centrifuge need cleaning?

Cleaning frequency depends on contamination levels. Heavily contaminated oil may require more frequent rotor cleaning. Most operators simply inspect the rotor after each batch until a maintenance schedule is established.

Is the system difficult to maintain?

No. Routine maintenance consists primarily of cleaning accumulated solids from the rotor. There are no disposable filter elements to replace, reducing operating costs and maintenance time.

Can the cleaned oil be reused?

Many customers reuse cleaned oil for waste oil heaters, blending programs, industrial burners, or recycling operations. Users should always comply with local regulations and equipment manufacturer recommendations.

What are the advantages over traditional filters?

Benefits include:

  • No disposable filters
  • Lower operating costs
  • Removes water and fine solids
  • High contaminant holding capacity
  • Reduced waste disposal costs
  • Consistent cleaning performance
  • Cleaner oil with fewer consumables

Is this system suitable for commercial use?

Yes. The Dieselcraft centrifuge systems are used by fleets, farms, repair shops, mining operations, industrial facilities, marine operators, and waste oil recyclers worldwide.

What size system is best for a 55-gallon drum?

The Dieselcraft Model 60 centrifuge is commonly used on 55-gallon drum systems and processes approximately 60 gallons per hour while holding up to 20 ounces of contamination in the rotor.

How much can I save by cleaning waste oil?

Savings vary by operation, but users typically reduce disposal costs, decrease purchases of replacement oil, eliminate disposable filter expenses, and recover usable oil that would otherwise be discarded.

Why choose Dieselcraft?

Dieselcraft has been developing fuel and oil cleaning technology since 2002 and offers proven centrifuge systems that clean oil without disposable filters, helping operators reduce maintenance costs and extend fluid life.

Need Help Selecting a Waste Oil Cleaning System?

Call Dieselcraft at 530-613-2150 or email us to discuss your application and receive a recommendation.