Related Clues:

• Fuel oil
• Inventor of an eponymous engine
• 35-Across, e.g
• Shell carries it
• Neon, for example
• Many a noble element
• Sign on an interstate
• Methane
• Thing to step on when in a hurry
• Great time, in slang
• See lid, oddly, of the fuel
• Bloviation
• Mustang mover?
• Talk excessively
• 15-Across product