Back in 1978 or 1979 the USA went from leaded gas to unleaded. I was riding a S100r around the country and used to mix up "octane/leaded" concentrate in the chemistry lab at school. My friends used to come around an fill up - a couple ounces was good for a six gallon tank.
After a while they just called it and then me - JUCE
good conversation starter on a license plate...