Diesel 911 Instructions: A Comprehensive Guide
Diesel 911 is a winter rescue formula designed to restore fuel flow, reliquify gelled fuel, and de-ice filters. It’s crucial for cold-weather emergencies,
especially with biodiesel blends.
Understanding Diesel Fuel Gelling
Diesel fuel gelling is a common winter problem occurring when wax crystals form within the fuel at colder temperatures. These crystals accumulate, thickening the fuel and eventually clogging fuel filters, preventing proper engine operation. This is particularly problematic with biodiesel, which tends to gel at higher temperatures than standard petroleum diesel.
The gelling process restricts fuel flow, leading to difficult starting, reduced engine power, or even a complete engine stall. Understanding this phenomenon is vital for preventative measures. Diesel 911 addresses this by reliquifying these wax crystals, restoring the fuel’s fluidity. Knowing your fuel’s cloud point – the temperature at which wax begins to form – can help you anticipate and prevent gelling issues. Always consult your vehicle’s owner manual for specific biodiesel specifications and winter operability guidelines.
What is Diesel 911?
Diesel 911 is a specialized fuel additive formulated as a “winter rescue formula” designed to combat cold-weather diesel fuel issues. It’s manufactured by Power Service Products and is readily available for purchase. Its primary function is to address gelled diesel fuel, restoring its ability to flow and allowing your vehicle to start and operate effectively in frigid conditions.
Beyond simply preventing gelling, Diesel 911 also functions as a de-icer, specifically targeting frozen fuel filters. This dual-action capability makes it a valuable tool for emergency situations. It’s effective on both standard diesel fuel and biodiesel blends, though biodiesel’s lower gelling point requires extra consideration. The product’s instructions for use are clearly indicated on the container label, ensuring proper application.
Diesel 911: Primary Function ⎯ Reliquifying Gelled Fuel
The core purpose of Diesel 911 is to reliquify diesel fuel that has begun to gel due to cold temperatures. As diesel cools, wax crystals form within the fuel. These crystals accumulate, thickening the fuel until it becomes a semi-solid, hindering its flow through the fuel lines and ultimately preventing the engine from starting or running.

Diesel 911 contains a unique chemical blend that breaks down these wax crystals, restoring the fuel to a liquid state. This allows the fuel to once again reach the engine, enabling ignition and operation. In a winter emergency, when a vehicle won’t start or loses power due to gelled fuel, Diesel 911 is designed to restore the flow of diesel to the engine, providing a crucial rescue solution. It’s a proactive and reactive measure against fuel gelling.
Diesel 911: Secondary Function ⎼ De-icing Fuel Filters
Beyond reliquifying gelled fuel, Diesel 911 also functions as a de-icer for fuel filters. In cold weather, water present in the diesel fuel can freeze within the filter, restricting fuel flow and causing engine performance issues, or even complete engine shutdown. This is a common problem, especially in older vehicles or those operating in extremely cold climates.
The formula in Diesel 911 helps to melt the ice crystals that form within the fuel filter, clearing the blockage and allowing fuel to pass through. This de-icing action is vital for restoring engine power and ensuring reliable operation. If a vehicle struggles to start or experiences a sudden loss of power in cold weather, a frozen fuel filter is a likely culprit, and Diesel 911 can provide a quick and effective solution. It’s a dual-action formula for winter diesel challenges.

Using Diesel 911 in Winter Emergencies
Diesel 911 is ideal for emergency use when fuel gels or filters freeze in cold weather, restoring power and enabling vehicle operation quickly.
Determining if Your Fuel is Gelled
Recognizing gelled diesel fuel is the first step in addressing a winter emergency. Several telltale signs indicate a problem. If your diesel engine struggles to start, or starts but lacks power, especially in cold temperatures, fuel gelling is a likely culprit.
You might notice a visible change in the fuel’s appearance – it may appear cloudy or have a waxy consistency. Attempting to draw fuel through the lines can reveal a blockage or resistance. A key indicator is the difficulty the fuel pump has in drawing fuel from the tank.
Don’t mistake a low battery for gelled fuel! Carefully assess the situation before adding Diesel 911. If you suspect gelling, proceed with the dosage and application instructions outlined in this guide to restore fuel flow and get your vehicle running again.
Dosage Instructions for Diesel 911
Proper dosage is critical for Diesel 911’s effectiveness. Always consult the product label for the most accurate and up-to-date instructions, as formulations can vary. However, a general guideline is to add 1 bottle (typically 16oz) of Diesel 911 to a minimum of 25 gallons of diesel fuel.
For larger tanks, maintain this ratio. For example, a 50-gallon tank would require 2 bottles, and a 75-gallon tank would need 3. Do not exceed the recommended dosage, as over-treatment won’t improve performance and could potentially cause issues.
In severely gelled situations, a slightly higher initial dose might be necessary, but follow it up with subsequent doses at the standard ratio as the fuel begins to flow. Remember to thoroughly mix the Diesel 911 with the fuel for optimal results.
Application Method: Adding Diesel 911 to the Fuel Tank
Adding Diesel 911 to your fuel tank is a straightforward process, but proper technique ensures optimal results. Begin by carefully opening your fuel tank. Using a funnel is highly recommended to prevent spills and ensure the entire contents of the bottle are directed into the tank.
Pour the appropriate amount of Diesel 911 (based on your tank size and dosage instructions) directly into the fuel tank. After adding the treatment, securely replace the fuel cap. It’s beneficial to gently rock the vehicle from side to side after fueling to help thoroughly mix the Diesel 911 with the existing fuel.
Avoid adding Diesel 911 directly to a severely gelled fuel filter, as it’s designed to treat the fuel within the tank. The goal is to restore fuel flow from the source, allowing the engine to draw properly.
Running the Engine After Treatment
After adding Diesel 911 to the fuel tank, attempt to start the engine. It may take several attempts, especially if the fuel was heavily gelled. Allow the engine to run for a minimum of 15-20 minutes to circulate the treated fuel throughout the entire fuel system.
During this period, monitor the engine’s performance. You should notice a gradual improvement in power and responsiveness as the gelled fuel is reliquified. Avoid placing a heavy load on the engine immediately; allow it to warm up and stabilize.
If the engine struggles to start or continues to run poorly after 20 minutes, repeat the Diesel 911 treatment process. Remember, severe gelling may require multiple applications. Continue monitoring and allow sufficient run time for full system recovery.

Diesel 911 and Biodiesel Blends
Diesel 911 effectively treats biodiesel blends, though biodiesel has lower winter operability than standard diesel. Always consult your vehicle’s owner manual for biodiesel specifications.
Compatibility with Biodiesel
Diesel 911 demonstrates compatibility with biodiesel blends, offering a solution for winter operability concerns often associated with these fuels. However, it’s vital to understand that biodiesel, unlike traditional petroleum diesel, can exhibit gelling and clouding issues at comparatively warmer temperatures.

The specific blend percentage (B2, B5, B20, etc.) significantly impacts how biodiesel performs in cold weather. Higher biodiesel concentrations generally lead to increased susceptibility to gelling. Therefore, relying solely on Diesel 911 might not be sufficient in extremely cold conditions with high-percentage biodiesel blends.
Always prioritize preventative measures and adhere to the manufacturer’s recommendations for your specific biodiesel blend. Diesel 911 serves as a valuable tool for emergency situations, but proactive fuel management remains paramount for optimal winter performance.
Biodiesel Winter Operability Concerns

Biodiesel, while environmentally friendly, presents unique challenges in cold weather due to its higher gelling point compared to conventional diesel. As temperatures drop, biodiesel can form crystals that clog fuel filters and lines, hindering engine performance or even preventing starting. This phenomenon is more pronounced with higher biodiesel blend percentages.
The cold filter plugging point (CFPP) is a critical specification for biodiesel, indicating the lowest temperature at which fuel will still flow. However, even above the CFPP, biodiesel can experience waxing, a precursor to gelling.
Diesel 911 can help address these issues by reliquifying gelled fuel, but it’s not a substitute for proper winterization. Understanding your biodiesel blend’s limitations and taking preventative steps, like using anti-gel additives, are crucial for reliable operation in frigid conditions. Always consult your vehicle’s manual for specific biodiesel recommendations.
Referencing Your Vehicle’s Owner Manual for Biodiesel Specifications
Your vehicle’s owner manual is the definitive source for biodiesel compatibility information. Manufacturers specify the maximum biodiesel blend percentage (e.g., B5, B20) their engines are designed to handle, and may outline specific operating considerations for colder climates.
Ignoring these recommendations can lead to fuel system damage, reduced engine performance, and voided warranties. The manual will detail any necessary maintenance adjustments when using biodiesel, such as more frequent filter changes due to its solvent properties.
Diesel 911 is a helpful treatment, but it doesn’t override manufacturer specifications. Always prioritize the guidelines in your owner’s manual. Pay close attention to any warnings regarding biodiesel use in low temperatures, and understand the recommended fuel additives for optimal winter performance. Proper adherence to these guidelines ensures reliable operation and protects your investment.

Addressing Fuel System Contamination
Diesel 911 can sometimes convert clean fuel into shellac and gummy residue, potentially contaminating the fuel tank, especially in baffled tanks where complete cleaning is difficult.
Diesel 911 and Shellac Formation

Diesel 911, while effective at restoring fuel flow in gelled situations, can unfortunately contribute to the formation of shellac within the fuel system. This sticky, gummy substance is a byproduct of the reliquifying process, occurring when the additive interacts with existing contaminants or unstable fuel components.
Reports indicate that the shellac tends to accumulate on tank walls, particularly on accessible surfaces; Baffled fuel tanks present a challenge, as the internal structure limits access for thorough cleaning, leaving residue on inaccessible sides. This shellac isn’t simply dirt; it’s a transformed fuel product created by the Diesel 911 treatment itself.
Understanding this potential side effect is crucial for proper fuel system maintenance after using Diesel 911, especially in prolonged cold weather conditions where repeated treatments might exacerbate shellac buildup.
Tank Cleaning After Diesel 911 Use
Following Diesel 911 treatment, particularly after addressing significant fuel gelling, proactive tank cleaning is highly recommended to mitigate shellac buildup. While complete removal can be challenging, especially in baffled tanks, efforts should focus on accessible areas. Draining the tank allows for manual cleaning of reachable surfaces, though the shellac’s sticky nature makes it difficult to remove entirely.
The driver’s side of the tank is often more accessible for cleaning than the opposite side, due to the baffle structure. Professional tank cleaning services may offer more comprehensive solutions, utilizing specialized equipment to reach difficult areas. However, complete eradication of shellac in baffled tanks may not be feasible.
Regular preventative maintenance, including fuel stabilizer use and periodic tank inspections, can minimize the need for extensive cleaning after Diesel 911 application.
Baffled Fuel Tanks and Cleaning Limitations
Baffled fuel tanks, commonly found in many diesel vehicles, present significant challenges when attempting to clean out contaminants like shellac formed after using Diesel 911. These internal partitions, designed to reduce fuel sloshing, physically obstruct access to large portions of the tank’s interior.
The complex geometry created by baffles limits the reach of cleaning tools and prevents thorough flushing. As observed, cleaning is often restricted to one side of the tank, leaving the opposite side largely untouched. The sticky, gummy nature of shellac further complicates removal, adhering strongly to tank walls and baffles.
While draining and manually cleaning accessible areas is possible, complete removal within a baffled tank is often impractical without specialized equipment or professional tank cleaning services. Understanding these limitations is crucial for managing expectations and prioritizing preventative fuel maintenance.

Preventative Measures & Additional Tips
Proactive use of Diesel 911 and other winter additives is recommended. Roadside assistance is valuable for fuel issues, and always consult your owner’s manual!
Proactive Use of Diesel 911
Employing Diesel 911 before cold weather strikes is a smart preventative measure. Instead of waiting for fuel to gel and cause starting or power loss, regular addition to your diesel fuel tank can inhibit the formation of wax crystals. This is particularly important when utilizing biodiesel blends, as they tend to gel at warmer temperatures than traditional diesel.
Consider adding Diesel 911 at the beginning of the winter season and with each fill-up during periods of consistently low temperatures. This ensures a consistent level of protection within your fuel system. While Diesel 911 is excellent for emergency situations, consistent preventative use minimizes the risk of encountering those emergencies in the first place, keeping your vehicle running smoothly and reliably throughout the winter months.
Recommended Winter Fuel Additives
Beyond Diesel 911, several other winter fuel additives can enhance cold-weather performance. These additives often address different aspects of diesel fuel’s winter operability, complementing Diesel 911’s primary functions. Look for additives that offer anti-gel properties, moisture dispersion, and cetane improvement. Moisture dispersants are crucial as water in the fuel system can exacerbate gelling issues.
Cetane improvers can aid in easier starting, especially in frigid conditions. Combining Diesel 911 with a quality anti-gel and moisture dispersant provides a comprehensive defense against winter fuel problems. Trent Phariss from Road Assist recommends having top products for fuel during winter. Always consult your vehicle’s owner’s manual for compatibility recommendations before introducing any new fuel additive to your system.
Roadside Assistance and Fuel Issues

When facing severe fuel gelling or system issues, even with Diesel 911 treatment, don’t hesitate to contact roadside assistance. Professionals possess specialized equipment and knowledge to diagnose and resolve complex fuel-related problems. Trent Phariss, from a Road Assist Department, highlights the importance of preparedness for winter fuel challenges.
Roadside assistance can provide fuel delivery, jump-starts, and even tow your vehicle to a repair facility if necessary. Preventative measures, like using fuel additives and keeping your tank full to minimize condensation, are always best. However, knowing you have access to reliable roadside support offers peace of mind during winter travel. Remember, attempting to force a gelled engine can cause significant damage, making professional assistance a wise investment.
Power Service Diesel 911: Product Overview
Power Service Diesel 911 is specifically formulated as a winter rescue treatment, designed to quickly address gelled diesel fuel. It functions by reliquifying wax crystals that form in diesel at colder temperatures, restoring fuel flow to the engine. This is particularly important for vehicles struggling to start or experiencing a loss of power in frigid conditions.
Beyond reliquifying gelled fuel, Diesel 911 also works to de-ice frozen fuel filters, a common issue in winter. The product is effective on both standard diesel and biodiesel blends, though biodiesel’s operability can be affected at higher temperatures. Always consult your vehicle’s owner manual for specific biodiesel recommendations. It’s a proactive solution for emergency situations, offering a way to get back on the road when cold weather strikes.
Finding More Information Online
For comprehensive details regarding Power Service Diesel 911, numerous online resources are readily available. The official Power Service website provides in-depth product specifications, frequently asked questions, and safety data sheets. Several automotive forums and online communities dedicated to diesel engines feature discussions and user experiences with Diesel 911, offering practical insights.
YouTube channels specializing in vehicle maintenance often showcase demonstrations of Diesel 911 in action, illustrating its application and effectiveness. Retailer websites, such as those of auto parts stores, typically include customer reviews and detailed product descriptions. Remember to always cross-reference information and consult your vehicle’s owner’s manual for compatibility and dosage guidelines. Staying informed ensures optimal use and maximizes the benefits of this winter fuel treatment.


















































