Putting Premium Gas in an Engine That Requires Regular? Stop It Now

Only 18 percent of new cars require premium. The owners of the other 82 percent waste about $2 billion a year using a gas that provides no benefit.
Read more: https://www.nytimes.com/2019/04/11/smarter-living/premium-gas-worth-it-octane-summer-ethanol.html?source=Snapzu