Marinated Top Sirloin

This is one of the most flavorful marinades I've ever found. I got it from my sister Kathy who is one of the very best cooks I know!

1/4 cup soy sauce (I like the low sodium)
1/4 cup olive oil
1 teaspoon lemon and pepper seasoning
1 teaspoon minced garlic or garlic powder
1 pound lean steak (any kind)

Marinate for 2 to 3 hours turning occasionally. Grill for about 15 to 20 minutes. Turn every five minutes until desired doneness.