In a medium bowl, combine Soy Sauce, Lime Juice, 1 tablespoon of Canola Oil, Garlic, Chili Powder, Cumin, and Oregano.
In a gallon-size Ziploc bag or large bowl, combine Soy Sauce mixture and steak; marinate for at least 1 hour up to 4 hours, turning the bag occasionally.
Heat the remaining 1 tablespoon of canola oil in a large skillet over medium-high heat. Add steak and marinade, and cook, stirring often, until the steak has browned and the marinade has reduced, about 5-6 minutes, or until desired doneness.
Serve steak in warmed tortillas, topped with Onion, Cilantro and Lime.