What are the effects of using 92 octane gasoline in a car designed for 95 octane?

1 Answers
McElaina
07/28/25 6:42pm
Using 92 octane gasoline in a car designed for 95 octane can cause engine knocking. Here is some relevant information about 95 octane gasoline: Definition: 95 octane gasoline consists of 95% isooctane and 5% n-heptane. High-compression engines can also use lower octane gasoline, but it is not advisable to choose the gasoline grade solely based on the compression ratio. Instead, follow the manufacturer's recommendations for fueling. Difference from 92 octane gasoline: The main difference lies in the octane rating, with no other fundamental distinctions. 95 octane gasoline is composed of 5% n-heptane and 95% isooctane, while 92 octane gasoline consists of 8% n-heptane and 92% isooctane. 95 octane gasoline has a higher octane rating than 92 octane gasoline, making it more stable and easier to burn, resulting in greater power output compared to 92 octane gasoline.
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