Root Beer Pork Roast

4 pounds pork loin (4 to 5)
1 can root beer (12 ounces)
1 small onion finely chopped
1 clove garlic minced

Root Beer Sauce:
1 can root beer (12 ounces)
1 can chili sauce (12 ounces)

Bake pork loin, root beer, onion and garlic in covered roaster or crock pot at 325 degrees for 4 to 5 hours. Drain and shred meat. Combine sauce ingredients in sauce pan and simmer until reduced by half. Serve with shredded pork.