1 (6-7 lb.) sirloin tip roast, cut in slices
1 1/2 c. salad oil
1/4 c. Worcestershire sauce
1/3 c. lemon juice
3/4 c. soy sauce
1/2 c. wine vinegar
1/2 c. parsley flakes
2 tsp. pepper
2 1/4 tsp. salt

Mix and put over roast. Let marinate overnight. Grill and enjoy.