Possible Clues:

• Lubricates
• Butters up, perhaps
• Lubricates drunken serenade, endlessly filling empty glass
• Lubricates with butter
• Does a lube job on
• Smooths
• Chassis lubricants
• Change gears, points and lubricants
• Provides lubrication for gear casing and relaxes
• Coats with Crisco, e.g.