SBT

According to the manual, you can run 87 octane under emergency conditions only, and you need to make sure that you don't hard-rev/high-rev the engine while running the 87 octane. Switch back to 93 as soon as practical, i.e., the emergency is over, so you don't hurt your engine. Running 87 octane exposes the engine internals to a lot of knock and pre-ignition detonation, both of which can ruin your engine.

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