Best ever flank steak marinade

This marinade makes the BEST fajitas!  And we love our fajitas around here!  It's best to marinade this for at least 4-6 hours, so give yourself time.  This will make the flank steak, which tends to be tough, nice and tender.

1 1/2lbs flank steak
1/2c vegetable oil
1/3c soy sauce (I use low sodium)
1/4c red wine vinegar
juice of 1 lime
2Tbl worcestershire sauce
1Tbl dijon mustard
3 cloves garlic, crushed
1tsp black pepper
2Tbl chopped cilantro

combine ingredients, cover and marinade in the fridge for at least 4-6 hours.  Then pop the steak on the grill, or into a pan on the stove and cook approx 5 minutes per side on high, depending on the thickness of your steak.  You want the steak medium-medium rare ideally.  Then slice into strips and use for fajitas, on salads, however you'd like!  I am making fajitas on the grill tonight with mine.  Enjoy!