Flank Steak Marinade

1 ½ cups salad oil
¾ cup soy sauce
¼ cup Wochestershire sauce
2 tablespoons dry mustard
2 ¼ teaspoons salt
1 tablespoon pepper (fresh)
½ cups wine vinegar
1 ½ teaspoons diced parsley
1 tablespoon garlic powder or crushed clove garlic
1/3 cup lemon juice

Marinade for 24 or 48 hours.