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Aug 19, 2009 | 08:16 AM

#21

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Joined: 06-01-2008

Posts: 76

From: Missouri

Quote:

Originally Posted by Marzipan

A question I have posed here, that no-one has seriously dealt with is, given that much of N. America is at a high elevation, would the lower absolute cylinder pressure produce as good a performance with lower octane when driving in the thinner air?

When I lived in Montana at 3600 feet they sold 85 octane because of this, I never burned it but I was told by those that did that they never noticed the difference except in the pocket book.