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O/T--What octane for '07 Cad.with v8 Northstar eng

Discussion in 'Off Topic Threads' started by Dave Thoele, May 17, 2009.

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  1. Dave Thoele

    Dave Thoele TS Member

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    O/T--What octane for

    I have a STS-4. Have tried all the different octanes. The car seams to run
    well with any 87,89 & 92. NO "pinging" with 87. Any reason not to use 87?
    Thanks, Dave
     
  2. Remstar311

    Remstar311 Member

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    It might pull timing a little with the lower octane. High test is worth the extra 3.00 per fill up in my opinion. It just burns better, better gas mileage.
     
  3. grunt

    grunt TS Supporters TS Supporters

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    on board computer will adjust for the lower octane. You may not get the best performence,But youll save a buck.
     
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