We used 115/145 “purple gas” in the T-28 trainers (1977-78) at Pensacola. I used to love walking from the BOQ to the flight line early morning and the flights started taking off. It was like a scene right out of a WWII movie with the big radial engines in the T-28s rumbling and a long orange/blue flame coming out of the exhaust stacks.
https://en.wikipedia.org/wiki/Avgas
The Jap Zero of WWII was the premiere fighter plane of the skies in the first couple years of the war. A Zero weighed the same as a modern SUV, but its radial engine put out 950 horsepower. If you can imagine an SUV with 950 horsepower, that’s how potent the Zero was.