Mark's Favorite Marinade!

Almost every time we go home to visit my folks, they fix us beef tenderloin with this marinade because they know Mark loves it so much! Keep in mind that my Mom never measures; I had to pull her leg to get her to write down approximate proportions :) She pretty much just does it to taste.

Ingredients:
1 cup olive oil
1/2 cup Dr. Pepper
1/4 cup soy sauce
1/4 cup teriaki sauce
2 Tbs. lemon or lime juice or both
1 Tbs. minced onion
1/2 tsp. garlic powder
1/2 tsp. Worchestershire sauce or A-1 sauce
1/4 tsp. Thyme or oregano or Allspice (depending on your preference)

Directions: Marinade meat at least 1/2 hour before cooking