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It’s the first time I’ve owned a diesel-powered vehicle after several petrol engines. So my question is: Will misfuelling with gasoline cause expensive damage? So what should be considered after such a mishap?
Hans Bucher, Lucerne
In older cars, there is a risk that the diesel tank will be filled with gasoline due to carelessness. But not the other way around. The diameter of the gasoline nozzle is smaller than that of diesel. That’s why when you try to fill the petrol engine with diesel, your feet get wet. In order for the gasoline nozzle not to fit diesel, modern cars have special caps that open only in the tanks of the right diameter, that is, diesel.
If you fill in petrol instead of diesel, don’t drive any further! To avoid engine damage, the engine should not be started in case of doubt. If you only notice the fault while driving, for example due to a violent engine knock, you must stop immediately and switch off the engine. If you continue to drive, you run the risk of repair costs of 3,000 to 5,000 francs or more.
Diesel has the necessary lubricating properties to operate the very sensitive components of the injection pump and injectors in modern diesel engines. Gasoline has a cleaning effect and can wash off thin lubricating films. Older diesel engines with indirect injection are less sensitive. If in doubt, the operating instructions or your workshop will advise.
About 10,000 misfuels are used each year in Switzerland. In more than half of these faults, the TCS patrol pumps the petrol/diesel mixture in the field or on a base using a special pumping device. Meanwhile, there are several products in the car accessories industry that can acoustically, mechanically or optically prevent misfuelling in cars without a tangible filler neck.
Source: Blick
I’m Ella Sammie, author specializing in the Technology sector. I have been writing for 24 Instatnt News since 2020, and am passionate about staying up to date with the latest developments in this ever-changing industry.
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