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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

Which octane for highest engine benefit?

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Old March 5th, 2018, 9:46 AM
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Default Which octane for highest engine benefit?
Just purchased a 2011 Tahoe LT (Z71) without an owners manual. I have one on the way, but I'm looking to find out which octane will best benefit my engine. I don't plan on much towing, just everyday driving, averaging 60 miles a day, all highway miles no, stop and go. Thanks!
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Old March 5th, 2018, 12:45 PM
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https://www.google.com/search?safe=o....0.BYef2qKLcrc

87.

I like how the manual puts "renewable" in quotes in reference to E85... lol
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Old March 5th, 2018, 4:22 PM
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Just regular 87 pump gas, now if you change the timing then you will have to go to 91 or 93
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Old March 9th, 2018, 7:14 AM
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Consider using higher octane at higher altitudes, otherwise 87, and of course if you want maximum performance, use marine grade gas with no alcohol
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