Who does not know it: In the hope that petrol or diesel will become cheaper again, you keep driving the car, even though the fuel needle is gradually approaching the red area. With the high fuel prices, one would prefer to avoid going to the gas station altogether. But there is no way around it. If you not only want to protect your wallet but also your car, you should not drive your vehicle's petrol or diesel tank completely empty.
The motor vehicle expert from the Tüv Rheinland, Hans-Ulrich Sander, advises the "world" against this in principle. Instead, you should refuel regularly and with a view to the current fuel prices. Otherwise there is a risk of vehicle damage.
In older vehicles, a damaged fuel system can often lead to a defect in the injection and fuel pump, "T-Online" quotes vehicle expert Torsten Hesse from TÜV Thüringen as saying. After all, they are no longer cooled and lubricated by the fuel. The life of the engine decreases significantly. In the worst case, a complete failure is even possible. Then four-digit costs can be incurred.
On the other hand, if you have an older diesel car, you would have to bleed the fuel system manually if the tank ran empty. It doesn't damage the engine, but it's a messy business.
According to the manufacturers, modern engines are hardly susceptible to damage if the tank is empty. Nevertheless, this should not be fully exhausted here either, according to experts. Newer cars have a fuel filter, but dirt particles that are deposited in the fuel could be sucked in. And that can prevent clean fuel combustion.
If the tank is empty anyway, you should of course refill the tank first. It may then take several attempts before the car starts again.
An empty tank should therefore be avoided. The ADAC recommends refueling, "preferably when the tank is about a quarter full."
Sources: Welt, T-Online, HNA
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