In a medium-sized bowl, combine oil, lemon juice, soy sauce, brown sugar, Worcestershire sauce, garlic powder, and pepper. Whisk together.

Place steak in a Ziploc bag and pour marinade over steak. Let marinate in the refrigerator for at least 30 minutes. 2 - 4 hours is more ideal.

Heat outdoor grill to high.

Once the grill is heated, place tri-tip steak on the grill. Generously salt each side of steak. Sear each side for 5 - 8 minutes per side.

Lower to medium to medium-low heat and continue to grill for 6-10 minutes or until thermometer reaches 130 degrees in the center of the steak. Tri-tip steaks can range in thickness. It is suggested to use a meat thermometer to check the temperature to ensure the meat isn't overcooked. The total cooking time will be 20 - 25 minutes at the least. An average 2-lb. tri-tip will need about 25 minutes total cooking time.

Since tri-tip steaks vary in thickness, your best bet is to use a meat thermometer to check for temperature. The instant-read thermometer reads 120 degrees for rare, 130 degrees for medium-rare, and 140 degrees for medium.

Remove steak from grill and let rest for 10 -15 minutes before slicing. Slice across the grain for the most tender meat.

May serve with garlic parsley butter.