• ShredderFeederA
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    2 days ago

    Use the lowest octane that doesn’t cause pinging or knocking. The ONLY thing premium about gas is the steability at higher pressures…

    93 octane doesn’t self-ignite as easily, and in higher compression engines this matters…

    • boonhet@sopuli.xyz
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      1 day ago

      You may want to measure fuel economy and power on different octane ratings if you have a modern car. Newer ECUs can advance or retard spark on the fly.

      But also:

      laughs in diesel

      I don’t even need an exact air to fuel ratio. Fuel gets injected as it’s being burned not before.

      (let’s ignore the fact that I only get 7l/100km or 35 mpg which is super inefficient for a diesel, because it’s a heavy wagon with torsen based permanent AWD and an older 1600 bar common rail system)

      • ShredderFeederA
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        1 day ago

        It’s my understanding that diesels get more efficient the more load they’re under… The extra weight actually makes them burn cleaner and more thoroughly.