4 Situations Where You Need To Drain Your Fuel Tank


The fuel system is a critical component of your car. The fuel system delivers the fuel to the engine, which makes the combustion process that powers the car possible. Without a properly functioning fuel system, the engine will not run correctly, resulting in expensive trips to the mechanic. A healthy fuel system also helps maintain optimal fuel economy, saving money on fuel costs in the long run. 

One of the essential parts of your fuel system is the fuel tank, which stores the fuel used to power the engine. Typically, you’d never want to drain the fuel tank completely to keep your fuel pump and lines lubricated. Most cars are designed to remind drivers never to run their tanks empty. However, knowing how to drain your fuel tank is an essential skill that you should know in some situations. Here are four scenarios where you should drain your fuel tank completely.

1. You Put the Wrong Fuel 

Putting the wrong fuel in a tank is a fairly common scenario, especially among inexperienced drivers. After all, fuel stations in the UK offer as many as five different fuel options. This can be a costly mistake because the wrong fuel can damage your engine or cause it to malfunction. In this case, draining the fuel tank is the only way to avoid this damage.

Understanding the main differences between fuel, particularly diesel and petrol, is crucial. Putting diesel in petrol and engine and vice versa can cause severe damage to the engine, fuel system, and catalytic converter. If you’re in this situation, the best thing to do is to call professionals from fuel-draining companies. Besides knowing their way around your car, they will have the necessary tools to drain and contain the fuel from your tank.

2. You Need To Repair Your Fuel Pump 

All car parts break down as they age, and fuel pumps are no exception. Since the tank usually houses the fuel pump, replacing it requires you to drain all the fuel left in your tank. While some cars put the fuel pump outside the tank for easier access, most mechanics still recommend draining the tank completely to avoid inhaling poisonous fumes and making a mess in your garage.

3. You Need To Clean Your Tank

Most cars in Europe today use plastic tanks. However, if you have a vintage car, it probably has a metal tank that is prone to corrosion and sludge buildup. Additionally, they use less efficient engines than modern ones, meaning they can leave more waste in the tank after being used. To restore your fuel system to its original working order, it is essential to clean your tank. Remove the tank from the car, empty it, and then use a particular cleaning solution and a brush to scrub away any residue. Once the tank is clean, you can reinstall it and refill it with fresh fuel.

4. You’re Storing Your Car For a While

Finally, if you’re planning to store your car for an extended period, it’s essential to drain the fuel tank. This is because fuel can degrade over time, and this degradation can cause damage to the fuel system. Draining the tank and replacing the fuel with fresh fuel can help to avoid this damage. 


Draining a fuel tank is an essential maintenance task that most people don’t bother to learn unless they make the mistake of putting the wrong fuel in their tanks. If you own a vintage car, you may need to prevent the buildup of sediment and other debris that can clog fuel lines and cause damage to the engine. Additionally, it can help to prevent rust and corrosion that can compromise the integrity of the fuel tank over time. If you’re not confident that you can do it properly, it’s best to call a 24/7 fuel-draining company to do it for you.

Putting the wrong fuel in your tank doesn’t have to spell doom for your car, as long as you call Fuel Fixer, a 24/7 fuel draining company immediately. WHile waiting. make sure to turn off your car and park in a secure place. Contact us today to learn more. 

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