1 1/2 c. oil
3/4 c. soy sauce
1/4 c. Worcestershire
2 tsp. dry mustard
2 1/4 tsp. salt
1 tsp. coarse black pepper
1/2 c. wine vinegar
1 1/2 tsp. dry parsley
1 tsp. garlic salt
1/3 c. fresh lemon juice

Mix all ingredients together and pour over steak in covered container. Marinate several hours or overnight.