The Chevron-Gulf merger received final approval.

The Federal Trade Commission approved Chevron’s $13.3-billion merger with Gulf Corp. last October, but an order had remained in effect requiring the companies to continue separate operations until certain Gulf assets could be sold to other firms. The commission, which voted 4 to 1 to approve completion of the merger, said it was allowing the combination to proceed because all but one of the assets in question have been disposed of. The sale of West Texas Gulf Pipe Line Co. is awaiting final approval. On a 5-0 vote in Washington, the commission also allowed the sale of Gulf’s interests in Colonial Pipeline to Los Angeles-based Unocal Corp.--one of the conditions of the merger.