A proud tradition was born on May 1, 1916, when Harry Sinclair formed Sinclair Oil from the assets of eleven small petroleum companies. Sinclair quickly grew to become the seventh largest oil company in the United States. The original Sinclair Oil Company began marketing the apatosaurus (brontosaurus) in 1930 and now after more than 75 years, "Dino" still remains one of the most recognizable corporate logos in the world.

Sinclair is headquartered in Salt Lake City, Utah, and owns and operates two refineries in Wyoming. Marketing fuel in 22 states and supplying fuel to over 2,700 distributor operated stations makes the Sinclair brand a prominent and welcome sight to the motoring public.

We invite you to take a look around and learn about Sinclair. You can also leave comments by visiting the Feedback page. Please feel free to send us your comments and suggestions. We look forward to hearing from you!