Related Clues:

• Maintain, as some tools
• Partner of food and lodging
• Engine additive
• See 24 Across
• Cooking fuel
• Beetle's need
• OPEC stuff
• Pump content
• Radon, e.g.
• It's illegal to pump yourself in Oregon
• Car additive
• Slick liquid
• Atar
• Lemon juice?
• Jett's find in "Giant"