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Octane is resistance to burn. High compression and forced induction engines, using lower octane fuels, can detonate early ("pre-detonation") and this is very bad as you can imagine. Using a higher octane fuel will allow you to run higher compression in your engine and thus create more power. It's why your average car is built for non-premium fuels: it plain doesn't need it. It also can clog up your engine and exhaust with the extra unburnt fuel.
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Dec 29, 2022 18:50
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Rorac posted:You are almost certainly damaging your engine if you don't run premium in those cars. Timing adjustments can only compensate so far. Maybe if the car asks for midgrade and you use standard because somehow it's all you can get and you're gentle, but I wouldn't trust a car that demands premium to run on standard. It depends on the engine management. Something made in the last 10 years will fare better than something much older.
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Mar 14, 2023 22:24
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