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Can 95 Octane Fuel Be Replaced with 92 Octane?

1 Answers
Debra
07/28/25 7:15pm
It is not advisable to use 92 octane fuel in a vehicle designed for 95 octane. If a high-compression engine is fueled with 92 octane gasoline, it may cause engine knocking, leading to unstable idling, reduced power, increased fuel consumption, and in severe cases, could even result in bent engine valves or damage to the valve cover. The primary difference between 92 and 95 octane gasoline lies in their octane ratings—higher octane fuel offers better resistance to knocking. Each car engine has a specified compression ratio, which determines the appropriate gasoline grade to use. Engines with a compression ratio between 8 and 10 should use 92 octane, while those above 10 require 95 octane.
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