Rajan Wilcox
Diesel fuel is a liquid fuel designed for use in diesel engines, which are internal combustion engines that use compression to ignite the fuel without a spark. Diesel fuel typically refers to fractional distillates of petroleum fuel oil, although alternative sources such as biodiesel, biomass-to-liquid (BTL), and gas-to-liquid (GTL) diesel are becoming more common. To ensure the optimal performance of diesel engines, it is crucial to maintain the purity of the fuel by removing contaminants such as water, paraffin, and debris. This process of purification is known as fuel straining, and it can be achieved through various methods, including the use of filters, funnels, and chemical additives.
How to strain diesel fuel
| Characteristics | Values |
|---|---|
| Reason | To remove water, paraffin, debris, algae, or diesel bug |
| Methods | Using a water separating funnel, a nylon stocking, a primary filter, or a product like Algae-X or Mr Funnel |
| Cost | The Smart tech funnel and Algae-X are available without the addition of expensive chemicals |
| Alternative solutions | Drain the tank, steam clean it, flush all the lines, dump the old diesel, and refill with new fuel |
Explore related products
What You'll Learn
Using a water separating funnel
To strain diesel fuel with a water-separating funnel, you can follow these steps:
Firstly, choose a suitable water-separating funnel. The market offers various options, including the popular Mr. Funnel, which has a Teflon-coated stainless steel screen that filters at 100 microns. Other options include the Racor heavy-duty fast-flow filter and the West Marine Fuel Filter Funnel, which offers different flow rate models. Consider your specific needs and choose a funnel with an appropriate flow rate and compatibility with your equipment.
Once you have selected your funnel, ensure that the fill tube fits securely inside the fill point of your boat, tractor, or vehicle. When you are ready to top off the fuel tank, carefully insert the funnel into the fill tube, maintaining a level position. It is important to avoid pouring fuel directly onto the filter element. Instead, pour the diesel fuel into the funnel, swirling it gently to create a similar effect to panning for gold.
The water-separating funnel works by pre-filtering and separating contaminants from the diesel fuel. This includes common impurities such as dirt, gravel, and other debris. Additionally, the funnel effectively separates water from the fuel, which is crucial as water accumulation can occur due to condensation or phase separation caused by ethanol additives.
It is worth noting that while water-separating funnels are effective, they may not remove all emulsified water, which refers to tiny droplets of water suspended in the fuel. To address this, some users recommend using chamois leather, a soft and pliable material made from sheepskin or lambskin. By soaking the chamois leather with clean gasoline, you can strain the diesel fuel through it to absorb any remaining water droplets.
Draining and Cleaning Diesel Fuel Tanks: A Step-by-Step Guide
You may want to see also
Explore related products
Filtering out paraffin and debris
Paraffin and debris are common contaminants in diesel fuel. Paraffin, a wax-like substance, is added to diesel fuel to improve engine power and reduce emissions. However, at low temperatures, paraffin can precipitate and form crystalline wax masses that block fuel filters. Debris, on the other hand, can come from dirt during refuelling or be present in the tank.
To effectively filter out paraffin and debris from diesel fuel, it is recommended to use a fuel filter with the appropriate micron rating. Fuel filters are designed to capture and hold contaminants, ensuring that only clean diesel fuel passes through to the engine. When choosing a fuel filter, it is important to consider the size of the particles you want to filter out. The filter's micron rating indicates the maximum particle size that can pass through, so selecting a filter with the correct micron rating for the given impurity size is crucial. For example, a 20/30 micron filter can be used as the primary filter, followed by a 5-micron filter on the engine.
It is also essential to regularly clean and maintain your fuel filter to prevent clogging and ensure optimal engine performance. Cleaning a diesel fuel filter involves removing it, tapping out debris, spraying it with a fuel system cleaner like B-12 Chemtool, and letting it dry before reinstallation. Additionally, some products like ALGAE-X and Mr Funnel from Smart Tech are specifically designed to strain diesel fuel without the need for additional chemicals or enzymes.
In some cases, dispersing additives can be introduced into the fuel to facilitate the formation of smaller paraffin crystals that remain suspended instead of forming sediments. Cleaning additives are also popular for removing soot and varnish from engines, improving fuel efficiency and reducing exhaust toxicity. However, the use of additives should be carefully considered, as filters may separate additives from the fuel, rendering them ineffective.
Cleaning Diesel Fuel from Gas Cans: A Step-by-Step Guide
You may want to see also
Explore related products
Removing algae with biocide
Biocides are a common method for removing algae from diesel fuel. However, they are toxic and can harm more than just the algae in the fuel. Overuse of biocides can lead to the development of biocide-resistant microbes and fuel system corrosion, resulting in costly repairs. Therefore, preventative measures are preferred over treatment.
To prevent algae growth, it is recommended to use high-quality diesel fuel that is less likely to contain contaminants and impurities. Regular cleaning and maintenance of the fuel tank and fuel lines are also important to prevent the buildup of debris and sediment. This includes frequently draining water from the water separator and using a fuel stabilizer to prevent microbial growth.
If algae are already present in the diesel fuel, a biocide treatment can be used to kill the microbes. Products such as Bio Kleen Diesel Fuel Biocide are designed to kill bacteria and fungus in diesel fuel. This biocide is effective in both diesel fuel and water and helps prevent fuel system failures by protecting fuel system components from organic acids created by microbial growth. It is important to follow the instructions on the product label and use the recommended dosage for your specific tank size.
In addition to biocides, other methods for removing algae from diesel fuel include using a mobile fuel polishing system to filter the fuel and chemical treatments specifically designed for diesel fuel, such as Clear-Diesel Fuel & Tank Cleaner, which removes water and slime, disperses contaminants, and stabilizes fuel during long-term storage.
Extracting Diesel Fuel from Coal: The Process
You may want to see also
Explore related products
Using a primary filter
The primary filter is the first line of defence against contaminants that can potentially damage your engine. Its primary function is to remove large particles such as dirt, debris, and rust from the fuel before it reaches the engine. By capturing these contaminants, the primary filter helps prevent clogs and ensures a clean fuel supply to the engine.
The primary filter is typically located between the vehicle's fuel tank and the engine. This provides the fuel with an initial cleaning before it reaches the fuel transfer pump. Its strategic placement allows it to catch any impurities that may have entered the fuel during storage, transportation, or even at the gas station.
To locate the primary filter, you can refer to your vehicle's manual. Once located, you may need to jack up the car to access the filter easily. Place a container underneath the old filter to catch any excess fuel that may spill during the removal process. If your filter is attached through fittings, use a wrench or screwdriver to loosen it. Alternatively, if your filter is secured with brackets, unclip the brackets to detach the filter.
It is important to keep your primary filter clean to ensure optimal performance and longevity of your engine. Regular maintenance and timely replacements are essential to prevent clogging, which can lead to reduced engine power, difficulty starting the vehicle, and even engine stalling. The recommended interval for replacing the primary filter ranges from 10,000 to 25,000 miles, depending on driving conditions, vehicle type, and usage patterns.
RV Diesel Discounts: How to Save on Fuel
You may want to see also
Explore related products
Mr Funnel strainer
Mr Funnel is a fuel filter funnel that can be used to separate water, dirt, debris, dust, and other contaminants from diesel fuel. It is designed with a patented vertical filter that can maintain a steady flow rate and does not need to be replaced. The filter is made of a non-stick, fluoro-polymer-coated stainless steel mesh with a filtration size of 74 microns.
Mr Funnel is available in four sizes, with varying flow rates of up to 45 litres per minute, making it suitable for different applications. It can be used with Jerry Cans or at the bowser to ensure that water contamination is removed from the fuel.
The product has received positive reviews from users, who have praised its effectiveness in filtering out water and contaminants from diesel fuel. Some users have also highlighted its ease of use and its ability to extend engine life by providing clean fuel.
Overall, Mr Funnel is a recommended product for those seeking an easy and reliable solution to remove water and contaminants from diesel fuel, thereby improving engine performance and longevity.
Bulk Diesel Buying: A Comprehensive Guide
You may want to see also
Frequently asked questions
You will need a water-separating funnel to remove water. However, it is unclear which funnel is best to filter out paraffin and debris. Some recommend a 20/30 micron filter as the primary filter with a 5-micron filter on the engine, but these can be expensive. Others suggest using a nylon stocking to strain the diesel.
There are a few products available that do not require the addition of chemicals or enzymes, such as Algae-X and Mr Funnel from Smart Tech. Mr Funnel is popular in the aircraft industry and costs around $20.
To prevent contamination, you can add biocide to your diesel fuel and regularly decant the tank sump. You can also use a fuel filter to keep debris out of your fuel system.
