Ok so when you go to the gas station there are three "grades" of gas (there's also diesel but that's not relevant here):

  1. Regular - this is what pretty much most people get.
  2. Plus - Why????
  3. Premium - for luxury/sports cars

So can someone explain what the hell the "plus" is for?

  • Elon_Musk [none/use name]
    ·
    4 years ago

    Higher octane gas burns slower preventing pre detonation and knocking in higher compression engines. Higher compression engines make more power and higher efficiency. https://www.youtube.com/watch?v=4ZysyokEU60

    "Midgrade fuel doesn’t really exist. In most cases, refineries do not produce a midgrade gasoline blend; instead, the middle-octane option is blended at the fuel pump from a given gas station’s supply of regular and premium gas. Midgrade fuel began appearing in 1995, as leaded gasoline was being phased out. At the time, most gas retailers were selling regular (leaded), unleaded (what we now call regular), and premium unleaded gasoline. When leaded gas was phased out, most retailers were left with the infrastructure to dispense three types of fuel, but only two types to sell. Thus was midgrade fuel born."