1 (10 oz.) pkg. frozen green beans, thawed
1 (10 oz.) pkg. frozen wax beans, thawed
1 (20 oz.) can ceci beans, drained
1 (16 oz.) can red kidney beans, drained
1 c. coarsely chopped onion
3/4 c. corn oil
3/4 c. cider vinegar
1/4 c. sugar
1 1/2 tsp. salt
1/2 tsp. pepper

In large bowl toss together beans and onion. In small bowl, stir together corn oil, vinegar, sugar, salt and pepper until well blended. Pour over bean mixture, tossing to coat well. Cover and refrigerate several hours or overnight, stirring occasionally.