87 Octane

[Dick Steinkamp]

Originally Posted by 1929

I always use 87 octane in my regular car, and my Model A. Someone I know who owns more then a few old cars ,and Hot Rods, says I should only use in my Model A, High Octane, and add high octane booster due to the fact that there is Ethanol in are gas, and that my motor was newly rebuilt. Is that excessive?

I think you're safe with 87

"By the early 1930s, automobile gasoline had an octane reading of 40 and aviation gasoline of 75-80."

http://www.newworldencyclopedia.org/entry/Gasoline