J.B. Dewar, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Other >> Gas & Oil >> Distributors & Marketers J.B. Dewar, Inc. 75 Prado Rd.San Luis Obispo, CA 93403 | map | directions (805) 543-0180 | (800) 549-6457 | fax: (805) 543-8537 Visit Site Petroleum distribution and Cardlock fueling sites. Diesel fuel also available. Member Since: 1901 Send a message to: J.B. Dewar, Inc. Your Name: Your Email: Subject: Message: (Date: 6/28/2022) If your business isn't here, contact us today to get listed!