Heat oven to 325'. Heat oil in Dutch oven. Brown roast in hot oil; remove roast. Mix wine, garlic, carrots, onions, sour cream, salt, pepper and thyme in Dutch oven. Return roast to Dutch oven. Cover and bake until roast in tender, about 3.5 hours, turning 2 or 3 times during baking. Remove roast and vegetables to heated platter; keep warm while preparing gravy. Skim fat off liquid. Shake water and flour in covered jar. Stir flour mixture slowly into liquid. Heat to boiling, stirring constantly. Boil and stir 1 minute. Stir in lemon juice; cook 1 minute. Slice roast thinly; serve with gravy. *NOTE: Beef bottom round or boneless chuck eye roast can be substituted for the rolled rump roast.