Quote:
Originally Posted by ksa8907
High engine load can occur at any rpm. Also, high engine load at low engine speed is more prone to pre-ignition because the air/fuel mixture has more time to heat up before the spark.
Given that these are hybrid vehicles also means that the ECU is always trying to run the engine moat efficiently, high load and low engine speed. While the vehicle is rated for 87 octane, it does benefit from more knock resistant fuels.
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by the time the knock sensors pick up the issue you will need a new engine