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Old 07-09-2018, 07:27 AM   #5 (permalink)
Ecky
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Join Date: Dec 2011
Location: New Zealand
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ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.72 mpg (US)

Oxygen Blue - '00 Honda Insight
90 day: 59.69 mpg (US)
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Generally you'll see either "Premium fuel recommended" or "Premium fuel required" under the gas cap door. I understand the difference is that "recommended" are vehicles whose knock sensors will pull timing and safely operate with lower octane gas, while "required" are those that will be damaged by running regular.

Out of curiosity, is there any advantage to re-turning a vehicle where premium fuel is only recommended?
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