SWEET & SOUR MACARONI SALAD

1 pkg (8oz) uncooked elbow macaroni
3 medium carrots, scraped and diced
2 stalks celery, diced
1 medium onion, chopped
1 medium cucumber, peeled and chopped
1 large tomato, peeled and chopped
1/2 cup vegetable oil
1/2 cup cider vinegar
1/3 cup sugar
1 tsp salt
1/2 tsp ground black pepper

Cook macaroni according to package directions; drain. Rinse with cold water; drain again. Combine macaroni, carrots, celery, onion, cucumber, and tomato. Combine remaining ingredients; mix well. Pour over macaroni mixture; toss gently. Cover; chill 8 hours.  Serves 8.