CALTEX LUBRICANTS Caltex has over 75 years of experience in manufacturing finished lubricants with premium base oils to deliver excellent, reliable performance in a wide range of operating conditions. Caltex Lubricants delivers more than just high quality products using premium base oils; we offer customers more than a century of scientific lubricants research and innovation to help businesses operate at peak potential. We have the proven lubrication products to fit your needs. With the Delo family of products you can count on superb quality, extended service protection and outstanding performance. From stop-and-go city driving to long-haul trucking operations, Delo can help your business go further.