What Happens If You Put the Wrong Fuel in Your Car?

1 Answers
IsaacAnn
07/29/25 12:01pm
Hazards of using the wrong fuel in a car: 1. Using a lower octane fuel than required: The car may experience insufficient power and higher fuel consumption, but as long as it's not used long-term, it won't cause significant damage. Conversely, using a higher octane fuel than required generally has no adverse effects. 2. Adding gasoline to a diesel vehicle: The car may start, but due to incomplete combustion of gasoline, it will gradually lose power while driving, leading to shaking and white smoke. In such cases, the fuel system must be thoroughly cleaned. 3. Adding diesel to a gasoline vehicle: The vehicle won't start. Diesel has a lower ignition point, and while gasoline ignites via spark, diesel ignites under compression. The spark plugs may cause diesel to ignite prematurely, leading to knocking, engine damage, black smoke, vehicle shaking, and failure to start. In severe cases, the engine may be damaged. In such situations, contact a repair shop to clean the fuel system.
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