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    86 octane top tier or 87 octane not top tier?

    There is, but I don't have a membership so I've never checked what they have.
  2. S

    86 octane top tier or 87 octane not top tier?

    Lubbock, TX altitude is 3,202. The only stations with 87 in town are DK and it's not top tier gas.
  3. S

    86 octane top tier or 87 octane not top tier?

    Lubbock,Texas. The only stations in town with 87 octane are DK and it's not top tier.
  4. S

    86 octane top tier or 87 octane not top tier?

    Thanks. 👍 I've been using the 87, but read that top tier gas contains detergents that help keep your engine clean which can reduce carbon buildup and deposits on the intake valves. So I wondered which was the best way to go.
  5. S

    86 octane top tier or 87 octane not top tier?

    I've got a 2024 Mazda CX-5 non turbo. According to the manual, you're supposed to put in 87 octane or better. Most all the stations where I live only have 86 octane and I'm told it won't make a difference to use that. There are a couple stations with 87 octane, but it's not top tier...
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