Combine all ingredients in a ziptop bag, coating steak well. Refrigerate for 4 to 6 hours.
Place steak on counter 20 minutes before ready to grill.
Heat grill to medium-high heat. Lightly oil grill grates
Discard marinade and pat steaks dry with paper towels.
Place on gill for 5 minutes, flip steaks, and continue to grill until desired degree of doneness.
Notes
This marinade gives the steak a little bit of a sweet taste. If you don't want sweetness, cut sugar in half. You can substitute orange juice for triple sec.