85 is functional at elevation, but definitely still not preferable at elevation.
Works best with carbureted engines, which are obviously few and far between these days. You shouldn't put 85 octane in a modern fuel injected engine period.
Works best with carbureted engines, which are obviously few and far between these days. You shouldn't put 85 octane in a modern fuel injected engine period.
I have a 78 Fiat with a carburetor however, that definitely needs 91 or higher.
When you have 85 octane available at 7,000 ft and your car is engineered to run with 87 at sea level, you'll be fine.