Two things wrong with this. First, Catholics do not rely on traditions of men, but Apostolic Tradition, which comes from God via the Apostles. Second, we regard the Bible and Tradition as equal. Tradition is not higher than the Bible. They are two sides of the same coin.
Besides, I the question was whether Benedict is a liberal. You may disagree with him about the relationship between tradition and the Bible, but to call him a liberal is just plain dumb.
In the interests of peacekeeping, I don't call him anything.
But out of curiosity, curiosity, which apostles preached anything other than what is to be found in the bible?