In a small bowl, combine the first five ingredients. Pour 1/3 cup marinade into a large resealable bag; add the pork. Seal bag and turn to coat; refrigerate for 8 hours or overnight. Cover and refrigerate remaining marinade for sauce.
In a small saucepan, bring reserved marinade to a boil. Reduce heat; simmer, uncovered, for 5-7 minutes or until thickened. Keep warm.
Discard marinade. Using long-handled tongs, moisten a paper towel with cooking oil and lightly coat the grill rack. Grill pork, covered, over medium heat or broil 4-5 in. from the heat for 4-5 minutes on each side or until a thermometer reads 145°. Let meat stand for 5 minutes before serving. Brush with sauce. Yield: 4 servings.