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What are the effects of filling a car designed for 95 octane with 92 octane fuel?

1 Answers
FernandoDella
08/28/25 8:34am

It will not cause immediate harm to the car or the engine, but prolonged use may lead to engine knocking. Here is some relevant information about fuel usage: 1. Using a lower octane fuel than recommended: The vehicle may experience reduced power, increased fuel consumption, and in some cases, the engine warning light may come on, or the engine may stall and fail to start. 2. Accidentally adding gasoline to a diesel engine or vice versa: Both scenarios can have severe consequences due to the different working principles of the engines. Adding gasoline to a diesel engine may even result in engine failure. 3. Using a higher octane fuel than recommended: While higher octane fuel offers better stability, it may not burn completely in an engine with a lower compression ratio, leading to wasted power and increased carbon deposits.

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