Can Cadillac Use 92 Octane Gasoline?
1 Answers
Most models under the Cadillac brand are equipped with turbocharged engines, therefore requiring a minimum of 95 octane gasoline. Here are the relevant details: 1. Using 92 octane gasoline may cause engine knocking. Knocking is an abnormal combustion phenomenon in the engine. When the piston is in the compression stroke, it moves upward to compress the combustible mixture, at which point the temperature and pressure of the mixture increase. If the gasoline's stability is poor, the combustible mixture may ignite prematurely, resulting in knocking. 2. Premature combustion of the mixture pushes the piston downward while it is still moving upward, which can impair the engine's power output and cause damage. Gasolines with different octane ratings have varying levels of stability; higher-octane gasoline generally has better stability due to its higher octane number.