Crossword Genius

Gas rating (6)

Ross

I believe the answer is:

octane

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gas rating</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>

(Other definitions for octane that I've seen before include "chemical" , "Ingredient of petroleum" , "A liquid hydrocarbon found in petroleum" , "Flammable hydrocarbon - at once (anag)" , "One cat with hydrocarbon compound occurring in petrol" .)

I've seen this clue in the Universal and the Penny Press.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.