So I was board tonight, and I decided to figure out were the joke headlight fluid came from. Turns out it's really is a product.
The earliest headlamps were fueled by acetylene or oil and were introduced in the late 1880s. Acetylene lamps were popular because the flame was resistant to wind and rain.

en.wikipedia.org/wiki/Headlamp

For the next person who needs to look for some I suggest the camping department.