Pulled Pork Sandwiches

1 tablespoon vegetable oil
1 boneless pork shoulder  roast (3 1/2 to 4 pounds), netted or tied
1 can (10 1/2 ounces) Campbell's® Condensed French Onion Soup
1 cup ketchup
1/4 cup cider vinegar
3 tablespoons packed brown sugar
12 round sandwich rolls or hamburger rolls, split

• Heat the oil in a 10-inch skillet over medium-high heat. Add the pork and cook until well browned on all sides.
• Stir the soup, ketchup, vinegar and brown sugar in a 5-quart slow cooker. Add the pork and turn to coat.
• Cover and cook on LOW for 8 to 9 hours* or until the pork is fork-tender.
• Remove the pork from the cooker to a cutting board and let stand for 10 minutes. Using 2 forks, shred the pork. Return the pork to the cooker.
• Spoon the pork and sauce mixture on the rolls.
• *Or on HIGH for 4 to 5 hours.