Preheat grill to medium-high heat; grease grates well.
Brush corn with tub butter and sprinkle with Adobo seasoning.
Grill corn, turning occasionally, for 10 to 15 minutes or until well-marked and tender.
Meanwhile, in another small bowl, stir together mayonnaise, chipotle peppers and adobo sauce until combined.
Brush mayonnaise chipotle mixture evenly over cobs of corn. Sprinkle with queso fresco, cilantro, and oregano. Serve with lime wedges.
Note: For a smoother chipotle mayonnaise, purée in blender or food processor.