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Operating Hours

Available Fuels

  • Unleaded
  • Premium Ethanol Free

Services & Amenities

  • Pumps Open 24 Hours
  • Propane
  • ATM

Bring DINO Home

Unleash your inner DINO fan! Explore our merch store for epic DINO-themed gear that lets you show off your prehistoric passion in style.
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Fuel Savings Made Easy

Put DINO in your pocket with our free mobile app. Get directions to nearby stations and save on every gallon at participating locations.
Put DINO in your pocket with our free mobile app. Get directions to nearby stations and save on every gallon at participating locations.

Fill-Up with Clean

Sinclair’s powerful, high-quality additive, DINOCARE® is a registered TOP TIER™ gasoline that satisfies the requirements of today’s most advanced engines.
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Photo of phone with DINOPAY mobile app open.

Download our DINOPAY® App Today!

Get the mobile app. Save 10¢ per gallon on every fill up! Securely attached your favorite card and save on every gallon and inside offers.
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About Sinclair in Onawa

Fueling up in Onawa is a breeze with Sinclair. WE offer top-quality fuels with DINOCARE® to keep your vehicle running smoothly. Pay effortlessly at the pump with our DINOPAY® app. Whether you're a local or just passing through, Sinclair Gas Stations in Onawa, IA, provide a reliable, efficient fueling. Visit a Sinclair gas station today and experience the Sinclair difference.
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