Crossword clues for Gasoline additive.:LEADGasoline additive, onceSTPGasoline-additive initialsETHANOLCommon gasoline additiveETHYLGasoline additiveTOLUENEGasoline additiveANTIKNOCKGasoline additiveETHANOLGasoline additiveODORGasoline additiveSCENTGasoline additiveOCTANEGasoline additive.TCPGasoline additive: Abbr.ETHERPart of the gasoline additive M.T.B.E.STPGasoline additiveSTPGasoline additive brandETHYLFormer gasoline additiveETHYL___ alcohol, gasoline additiveLEADAdditive no longer used in Canadian gasoline