Quote:
Originally Posted by chicagoandy
The HyHi manual states that it requires at least 87 Octane gas, but higher octane is preferred.
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I was just checking out the manual, and I do not see where it says a higher octane is preferred. Specifically, it says:
Quote:
Select octane rating 87 or higher.
Use of unleaded gasoline with an octane rating lower than 87 may result in engine knocking.
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At my altitude, 85 octane would be fine. I will consider using a higher octane if I can convince myself it will make a measurable difference in my fuel economy.