1Heat coals or gas grill.
2Mix margarine, 3 tablespoons chili sauce and the Worcestershire sauce. Loosen skin on turkey in 4 or 5 places. Carefully spoon chili sauce mixture evenly under skin. Rub turkey skin with oil; sprinkle with salt and pepper. Insert ovenproof meat thermometer so tip is in thickest part of turkey.
3Cover and grill turkey, skin side down, 4 to 6 inches from medium heat 20 minutes; turn. Cover and grill 35 to 45 minutes longer or until thermometer reads 170°F and juice of turkey is no longer pink when center is cut.
4Remove turkey from grill; cover with foil tent. Let stand 10 minutes. Slice turkey. Drizzle with additional chili sauce.