Melt in your mouth Pot Roast

1 (3- to 4-pound) beef chuck roast
1 (12-ounce) can Cola (not diet)
3⁄4 cup dark brown sugar
3⁄4 cup Heinz chili sauce
3⁄4 cup ketchup
3⁄4 packet dry onion soup mix

Label: (12) Melt in Your Mouth Pot Roast
Combine all ingredients in a slow cooker, including the can of Coke. Cook on low 8 to 10 hours.
*Optional...Add 4 or 5 red potatoes and 2 cups of baby carrots. 3-15