Introduction
Trucks that are left in freezing weather can experience diesel gelling which causes the vehicle to not turn on. This repair will help as a guide to melt the gelled diesel back to a liquid and help the truck start properly. The vehicle that is used in this guide will be a 2008 Ford-250 truck, but the same concepts apply to all diesel vehicles.
Tools
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            Use an extension cord and plug it into the engine block heater which is located on the front bumper of the truck. 
 
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            Pour 16 ounces of Gelled Diesel Additive to every 20 gallons of fuel directly into the tank using the funnel as shown. 
 
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            Wait an hour for the Gelled Diesel Additive to activate. Then go inside the truck and try starting it by putting the key into the ignition. 
 
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            After starting the truck, move the vehicle into a garage where there is a greater chance of warmth. 
 
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            Plug in your heat lamp and place the lamp under the truck, as this will also help heat the vehicle. 
 
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Try to start your truck! If your vehicle still won’t start, try these steps again!