NOW OPEN! Florida's newest Isuzu dealership in the Tampa area!
Diesel gelling is a common problem that can plague diesel trucks during the winter, potentially leading to frustrating starts and, in severe cases, damage to the fuel system. Understanding what causes it, why it poses a problem, and how to prevent it can save you time and money and ensure your Isuzu truck runs smoothly, even in freezing temperatures.
What Is Diesel Gelling?
Diesel fuel contains paraffin wax, which is beneficial for the engine’s lubrication and fuel efficiency under normal conditions. However, as temperatures drop, this wax begins to solidify, causing the diesel to thicken. This thickening effect can clog fuel filters and lines, preventing the fuel from flowing correctly and making it difficult, if not impossible, for the engine to start.
The primary issue with diesel thickening is that it restricts the flow of fuel to the engine, leading to hard starts or preventing the vehicle from starting at all. If the diesel thickens inside the fuel lines or filters, it can also cause damage to the fuel system, potentially leading to expensive repairs.
How to Avoid Fuel Thickening in Your Diesel Truck
Use Winter Blend Diesel Fuel
Blends of diesel fuel designed for cold temperatures have a lower wax content and are formulated to remain fluid even in freezing weather. Many fuel stations switch to offering cold-weather blend diesel as the temperature drops, making it easier to avoid thickening issues.
Use Fuel Additives
Fuel additives designed to prevent thickening can be added to your diesel fuel. These additives lower the fuel’s cloud point, keeping it liquid even in cold temperatures. Be sure to follow the manufacturer’s instructions for the correct additive-to-fuel ratio.
Keep the Fuel Tank Full
Keeping your fuel tank as full as possible can help prevent condensation from forming inside the tank, which can contribute to fuel freezing. A full tank also means more fuel is available to circulate and stay warm.
Use Engine Block and Fuel Line Heaters
Engine block heaters warm the engine, making it easier to start in cold weather. Fuel line heaters prevent the diesel in the lines from thickening, ensuring smooth fuel flow to the engine.
Maintain Your Isuzu Truck Regularly
Regular maintenance of your fuel filters and fuel systems can help ensure they are in good condition and more resistant to problems caused by cold weather. Replace filters and clean the system as recommended in your owner’s manual.
Monitor Weather Conditions
Being aware of the weather and upcoming temperature drops can help you take preventative measures before diesel thickening becomes an issue.
By taking these steps, you can significantly reduce the risk of diesel freezing and ensure your diesel vehicle runs reliably even during the coldest month. If you’re having trouble with your fuel, contact Conley Isuzu Truck Center in Bradenton, FL for help.
