Originally Posted by Ott3r
Very high octane rating to avoid vapor lock at high altituedes...
The high octane is to avoid preignition (knock), in high compression engines, NOT vapor lock.
But would be a waste of money to run in a low compression stovebolt engine, or any other automotive engine for that matter.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.